<s>
Flickr	B-Algorithm
(	O
;	O
)	O
is	O
an	O
American	O
image	B-Algorithm
hosting	I-Algorithm
and	O
video	O
hosting	O
service	O
,	O
as	O
well	O
as	O
an	O
online	B-Architecture
community	I-Architecture
,	O
founded	O
in	O
Canada	O
and	O
headquartered	O
in	O
the	O
United	O
States	O
.	O
</s>
<s>
It	O
has	O
changed	O
ownership	O
several	O
times	O
and	O
has	O
been	O
owned	O
by	O
SmugMug	B-Algorithm
since	O
April	O
20	O
,	O
2018	O
.	O
</s>
<s>
Flickr	B-Algorithm
had	O
a	O
total	O
of	O
112	O
million	O
registered	O
members	O
and	O
more	O
than	O
3.5million	O
new	O
images	O
uploaded	O
daily	O
.	O
</s>
<s>
Photos	O
and	O
videos	O
can	O
be	O
accessed	O
from	O
Flickr	B-Algorithm
without	O
the	O
need	O
to	O
register	O
an	O
account	O
,	O
but	O
an	O
account	O
must	O
be	O
made	O
to	O
upload	O
content	O
to	O
the	O
site	O
.	O
</s>
<s>
Registering	O
an	O
account	O
also	O
allows	O
users	O
to	O
create	O
a	O
profile	O
page	O
containing	O
photos	O
and	O
videos	O
that	O
the	O
user	O
has	O
uploaded	O
and	O
also	O
grants	O
the	O
ability	O
to	O
add	O
another	O
Flickr	B-Algorithm
user	O
as	O
a	O
contact	O
.	O
</s>
<s>
For	O
mobile	O
users	O
,	O
Flickr	B-Algorithm
has	O
official	O
mobile	B-Application
apps	I-Application
for	O
iOS	B-Application
,	O
Android	B-Application
,	O
and	O
an	O
optimized	O
mobile	O
site	O
.	O
</s>
<s>
Flickr	B-Algorithm
was	O
launched	O
on	O
February	O
10	O
,	O
2004	O
by	O
Ludicorp	O
,	O
a	O
Vancouver-based	O
company	O
founded	O
by	O
Stewart	O
Butterfield	O
and	O
Caterina	O
Fake	O
.	O
</s>
<s>
The	O
service	O
emerged	O
from	O
tools	O
originally	O
created	O
for	O
Ludicorp	O
's	O
Game	O
Neverending	O
,	O
a	O
web-based	B-Application
massively	B-Application
multiplayer	I-Application
online	I-Application
game	I-Application
.	O
</s>
<s>
Flickr	B-Algorithm
proved	O
a	O
more	O
feasible	O
project	O
,	O
and	O
ultimately	O
Game	O
Neverending	O
was	O
shelved	O
,	O
Butterfield	O
later	O
launched	O
a	O
similar	O
online	O
game	O
,	O
Glitch	B-Application
,	O
which	O
was	O
shut	O
down	O
on	O
November	O
14	O
,	O
2012	O
.	O
</s>
<s>
Early	O
versions	O
of	O
Flickr	B-Algorithm
focused	O
on	O
a	O
chat	O
room	O
called	O
FlickrLive	O
,	O
with	O
real-time	O
photo	O
exchange	O
capabilities	O
.	O
</s>
<s>
It	O
was	O
eventually	O
dropped	O
as	O
Flickr	B-Algorithm
's	O
back-end	O
systems	O
evolved	O
away	O
from	O
Game	O
Neverendings	O
codebase	O
.	O
</s>
<s>
Key	O
features	O
of	O
Flickr	B-Algorithm
not	O
initially	O
present	O
are	O
tags	B-General_Concept
,	O
marking	O
photos	O
as	O
favorites	O
,	O
group	O
photo	O
pools	O
and	O
interestingness	O
,	O
for	O
which	O
a	O
patent	O
was	O
granted	O
.	O
</s>
<s>
In	O
addition	O
to	O
being	O
a	O
popular	O
website	O
for	O
users	O
to	O
share	O
and	O
embed	O
personal	O
photographs	O
and	O
an	O
online	B-Architecture
community	I-Architecture
,	O
in	O
2004	O
,	O
the	O
service	O
was	O
widely	O
used	O
by	O
photo	O
researchers	O
and	O
by	O
bloggers	O
to	O
host	O
images	O
that	O
they	O
embed	O
in	O
blogs	O
and	O
social	O
media	O
.	O
</s>
<s>
Yahoo	B-Application
!	I-Application
</s>
<s>
acquired	O
Ludicorp	O
and	O
Flickr	B-Algorithm
on	O
March	O
20	O
,	O
2005	O
.	O
</s>
<s>
On	O
May	O
3	O
,	O
2007	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
announced	O
that	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Photos	O
would	O
close	O
down	O
on	O
September	O
20	O
,	O
2007	O
,	O
after	O
which	O
all	O
photos	O
would	O
be	O
deleted	O
;	O
users	O
were	O
encouraged	O
to	O
migrate	O
to	O
Flickr	B-Algorithm
.	O
</s>
<s>
On	O
January	O
31	O
,	O
2007	O
,	O
Flickr	B-Algorithm
announced	O
that	O
"	O
Old	O
Skool	O
"	O
members	O
(	O
those	O
who	O
had	O
joined	O
before	O
the	O
Yahoo	B-Application
!	I-Application
</s>
<s>
acquisition	O
)	O
would	O
be	O
required	O
to	O
associate	O
their	O
account	O
with	O
a	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Flickr	B-Algorithm
upgraded	O
its	O
services	O
from	O
"	O
beta	O
"	O
to	O
"	O
gamma	O
"	O
status	O
on	O
May	O
16	O
,	O
2006	O
,	O
the	O
changes	O
attracted	O
positive	O
attention	O
from	O
Lifehacker	O
.	O
</s>
<s>
On	O
December	O
13	O
,	O
2006	O
,	O
upload	O
limits	O
on	O
free	O
accounts	O
were	O
increased	O
to	O
100	O
MB	O
a	O
month	O
(	O
from	O
20	O
MB	O
)	O
and	O
were	O
removed	O
from	O
Flickr	B-Algorithm
Pro	O
accounts	O
,	O
which	O
originally	O
had	O
a	O
2	O
GB	O
per	O
month	O
limit	O
.	O
</s>
<s>
On	O
April	O
9	O
,	O
2008	O
,	O
Flickr	B-Algorithm
began	O
allowing	O
paid	O
subscribers	O
to	O
upload	O
videos	O
,	O
limited	O
to	O
90	O
seconds	O
in	O
length	O
and	O
150	O
MB	O
in	O
size	O
.	O
</s>
<s>
On	O
March	O
2	O
,	O
2009	O
,	O
Flickr	B-Algorithm
added	O
the	O
facility	O
to	O
upload	O
and	O
view	O
HD	O
videos	O
,	O
and	O
began	O
allowing	O
free	O
users	O
to	O
upload	O
normal-resolution	O
video	O
.	O
</s>
<s>
In	O
2009	O
,	O
Flickr	B-Algorithm
announced	O
a	O
partnership	O
with	O
Getty	O
Images	O
in	O
which	O
selected	O
users	O
could	O
submit	O
photographs	O
for	O
stock	O
photography	O
usage	O
and	O
receive	O
payment	O
.	O
</s>
<s>
On	O
May	O
20	O
,	O
2013	O
,	O
Flickr	B-Algorithm
launched	O
the	O
first	O
stage	O
of	O
a	O
major	O
site	O
redesign	O
,	O
introducing	O
a	O
"	O
Justified	O
View	O
"	O
close-spaced	O
photo	O
layout	O
browsed	O
via	O
"	O
infinite	O
scrolling	O
"	O
and	O
adding	O
new	O
features	O
,	O
including	O
one	O
terabyte	O
of	O
free	O
storage	O
for	O
all	O
users	O
,	O
a	O
scrolling	O
home	O
page	O
(	O
mainly	O
of	O
contacts	O
photos	O
and	O
comments	O
)	O
and	O
updated	O
Android	B-Application
app	O
.	O
</s>
<s>
Tech	O
Radar	O
described	O
the	O
new	O
style	O
Flickr	B-Algorithm
as	O
representing	O
a	O
"	O
sea	O
change	O
"	O
in	O
its	O
purpose	O
.	O
</s>
<s>
On	O
March	O
25	O
,	O
2014	O
,	O
Flickr	B-Algorithm
's	O
New	O
Photo	O
Experience	O
,	O
a	O
user	O
interface	O
redesign	O
,	O
left	O
beta	O
.	O
</s>
<s>
On	O
May	O
7	O
,	O
2015	O
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
In	O
early	O
May	O
2019	O
,	O
SmugMug	B-Algorithm
announced	O
the	O
migration	O
of	O
Flickr	B-Algorithm
data	O
-	O
100+	O
million	O
accounts	O
and	O
billions	O
of	O
photos	O
and	O
videos	O
-	O
from	O
former	O
owner	O
Yahoo	B-Application
's	O
servers	O
to	O
Amazon	B-Application
Web	I-Application
Services	I-Application
(	O
AWS	B-Application
)	O
in	O
a	O
planned	O
12-hour	O
transition	O
on	O
May	O
22	O
,	O
2019	O
.	O
</s>
<s>
On	O
June	O
13	O
,	O
2008	O
,	O
Flickr	B-Algorithm
co-founder	O
Stewart	O
Butterfield	O
announced	O
his	O
resignation	O
on	O
July	O
12	O
,	O
2008	O
,	O
which	O
followed	O
that	O
of	O
his	O
wife	O
and	O
co-founder	O
Caterina	O
Fake	O
,	O
who	O
left	O
the	O
company	O
on	O
the	O
same	O
day	O
.	O
</s>
<s>
On	O
December	O
14	O
,	O
2008	O
,	O
The	O
Guardian	O
reported	O
that	O
three	O
employees	O
had	O
been	O
laid	O
off	O
as	O
Yahoo	B-Application
!	I-Application
</s>
<s>
continued	O
to	O
reduce	O
its	O
workforce	O
,	O
and	O
on	O
November	O
30	O
,	O
2010	O
,	O
CNET	O
reported	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Flickr	B-Algorithm
was	O
specifically	O
named	O
as	O
a	O
target	O
for	O
these	O
layoffs	O
.	O
</s>
<s>
On	O
June	O
13	O
,	O
2017	O
,	O
Verizon	O
Communications	O
acquired	O
Yahoo	O
!,	O
including	O
Flickr	B-Algorithm
.	O
</s>
<s>
On	O
April	O
20	O
,	O
2018	O
,	O
SmugMug	B-Algorithm
acquired	O
Flickr	B-Algorithm
from	O
Verizon	O
's	O
Oath	O
and	O
put	O
an	O
end	O
to	O
Flickr	B-Algorithm
1	O
TB	O
storage	O
plan	O
for	O
free	O
users	O
,	O
these	O
users	O
had	O
until	O
February	O
5	O
,	O
2019	O
to	O
convert	O
to	O
'	O
Pro	O
 '	O
accounts	O
or	O
their	O
photo	O
streams	O
would	O
be	O
reduced	O
to	O
a	O
maximum	O
of	O
1,000	O
pictures	O
.	O
</s>
<s>
Flickr	B-Algorithm
has	O
always	O
offered	O
two	O
types	O
of	O
accounts	O
:	O
Free	O
and	O
Pro	O
.	O
</s>
<s>
After	O
January	O
8	O
,	O
2019	O
,	O
members	O
over	O
the	O
limit	O
could	O
no	O
longer	O
upload	O
new	O
photos	O
to	O
Flickr	B-Algorithm
.	O
</s>
<s>
In	O
May	O
2011	O
,	O
Flickr	B-Algorithm
added	O
an	O
option	O
to	O
easily	O
reverse	O
an	O
account	O
termination	O
,	O
motivated	O
by	O
the	O
accidental	O
deletion	O
of	O
a	O
Flickr	B-Algorithm
user	O
's	O
account	O
,	O
and	O
public	O
reporting	O
of	O
its	O
protracted	O
restoration	O
.	O
</s>
<s>
Flickr	B-Algorithm
may	O
delete	O
accounts	O
without	O
giving	O
any	O
reason	O
or	O
warning	O
to	O
the	O
account	O
's	O
owner	O
.	O
</s>
<s>
As	O
a	O
result	O
of	O
the	O
SmugMug	B-Algorithm
buyout	O
,	O
Flickr	B-Algorithm
added	O
the	O
ability	O
for	O
users	O
to	O
download	O
all	O
of	O
their	O
account	O
data	O
,	O
such	O
as	O
photo	O
albums	O
,	O
contacts	O
,	O
and	O
comments	O
.	O
</s>
<s>
The	O
images	O
a	O
photographer	O
uploads	O
to	O
Flickr	B-Algorithm
go	O
into	O
their	O
sequential	O
"	O
photostream	O
"	O
,	O
the	O
basis	O
of	O
a	O
Flickr	B-Algorithm
account	O
.	O
</s>
<s>
Clicking	O
on	O
a	O
photostream	O
image	B-Algorithm
opens	O
it	O
in	O
the	O
interactive	O
"	O
photopage	O
"	O
alongside	O
data	O
,	O
comments	O
and	O
facilities	O
for	O
embedding	O
images	O
on	O
external	O
sites	O
.	O
</s>
<s>
Users	O
may	O
label	O
their	O
uploaded	O
images	O
with	O
titles	O
and	O
descriptions	O
,	O
and	O
images	O
may	O
be	O
tagged	B-General_Concept
,	O
either	O
by	O
the	O
uploader	O
or	O
by	O
other	O
users	O
,	O
if	O
the	O
uploader	O
permits	O
it	O
.	O
</s>
<s>
These	O
text	O
components	O
enable	O
computer	O
searching	O
of	O
Flickr	B-Algorithm
.	O
</s>
<s>
Flickr	B-Algorithm
was	O
an	O
early	O
website	O
to	O
implement	O
tag	B-Application
clouds	I-Application
,	O
which	O
were	O
used	O
until	O
2013	O
,	O
providing	O
access	O
to	O
images	O
tagged	B-General_Concept
with	O
the	O
most	O
popular	O
keywords	O
.	O
</s>
<s>
Flickr	B-Algorithm
has	O
been	O
cited	O
as	O
a	O
prime	O
example	O
of	O
effective	O
use	O
of	O
folksonomy	B-General_Concept
.	O
</s>
<s>
Users	O
can	O
organize	O
their	O
Flickr	B-Algorithm
photos	O
into	O
"	O
albums	O
"	O
(	O
formerly	O
"	O
sets	O
"	O
)	O
which	O
are	O
more	O
flexible	O
than	O
the	O
traditional	O
folder-based	O
method	O
of	O
organizing	O
files	O
,	O
as	O
one	O
photo	O
can	O
belong	O
to	O
one	O
album	O
,	O
many	O
albums	O
,	O
or	O
none	O
at	O
all	O
.	O
</s>
<s>
Flickr	B-Algorithm
provides	O
code	O
to	O
embed	O
albums	O
into	O
blogs	O
,	O
websites	O
and	O
forums	O
.	O
</s>
<s>
Flickr	B-Algorithm
albums	O
represent	O
a	O
form	O
of	O
categorical	O
metadata	O
rather	O
than	O
a	O
physical	O
hierarchy	O
.	O
</s>
<s>
Flickr	B-Algorithm
albums	O
may	O
be	O
organized	O
into	O
"	O
collections	O
"	O
,	O
which	O
can	O
themselves	O
be	O
further	O
organized	O
into	O
higher-order	O
collections	O
.	O
</s>
<s>
Organizr	O
is	O
a	O
Web	B-Application
application	I-Application
for	O
organizing	O
photos	O
within	O
a	O
Flickr	B-Algorithm
account	O
that	O
can	O
be	O
accessed	O
through	O
the	O
Flickr	B-Algorithm
interface	O
.	O
</s>
<s>
It	O
allows	O
users	O
to	O
modify	O
tags	B-General_Concept
,	O
descriptions	O
and	O
set	O
groupings	O
,	O
and	O
to	O
place	O
photos	O
on	O
a	O
world	O
map	O
(	O
a	O
feature	O
provided	O
in	O
conjunction	O
with	O
Yahoo	B-Application
!	I-Application
</s>
<s>
It	O
uses	O
Ajax	B-General_Concept
to	O
emulate	O
the	O
look	O
,	O
feel	O
and	O
quick	O
functionality	O
of	O
desktop-based	O
photo-management	O
applications	O
,	O
such	O
as	O
Google	O
's	O
Picasa	B-Application
and	O
F-Spot	B-Language
.	O
</s>
<s>
Users	O
can	O
select	O
and	O
apply	O
changes	O
to	O
multiple	O
photos	O
at	O
a	O
time	O
,	O
as	O
an	O
alternative	O
to	O
the	O
standard	O
Flickr	B-Algorithm
interface	O
for	O
editing	O
.	O
</s>
<s>
Flickr	B-Algorithm
provides	O
both	O
private	O
and	O
public	O
image	B-Algorithm
storage	O
.	O
</s>
<s>
A	O
user	O
uploading	O
an	O
image	B-Algorithm
can	O
set	O
privacy	O
controls	O
that	O
determine	O
who	O
can	O
view	O
the	O
image	B-Algorithm
.	O
</s>
<s>
Flickr	B-Algorithm
also	O
provides	O
a	O
"	O
contact	O
list	O
"	O
which	O
can	O
be	O
used	O
to	O
control	O
image	B-Algorithm
access	O
for	O
a	O
specific	O
set	O
of	O
users	O
in	O
a	O
way	O
similar	O
to	O
that	O
of	O
LiveJournal	B-Application
.	O
</s>
<s>
In	O
November	O
2006	O
,	O
Flickr	B-Algorithm
created	O
a	O
"	O
guest	O
pass	O
"	O
system	O
that	O
allows	O
private	O
photos	O
to	O
be	O
shared	O
with	O
non-Flickr	O
members	O
.	O
</s>
<s>
By	O
default	O
,	O
other	O
members	O
can	O
leave	O
comments	O
about	O
any	O
image	B-Algorithm
they	O
have	O
permission	O
to	O
view	O
and	O
,	O
in	O
many	O
cases	O
,	O
can	O
add	O
to	O
the	O
list	O
of	O
tags	B-General_Concept
associated	O
with	O
an	O
image	B-Algorithm
.	O
</s>
<s>
The	O
core	O
functionality	O
of	O
the	O
site	O
relies	O
on	O
standard	O
HTML	B-Language
and	O
HTTP	B-Protocol
features	O
,	O
allowing	O
for	O
wide	O
compatibility	O
among	O
platforms	B-General_Concept
and	O
browsers	B-Application
;	O
Flickr	B-Algorithm
's	O
functionality	O
includes	O
RSS	O
and	O
Atom	B-Application
feeds	I-Application
and	O
an	O
API	B-Application
that	O
enables	O
independent	O
programmers	O
to	O
expand	O
its	O
services	O
.	O
</s>
<s>
This	O
includes	O
a	O
large	O
number	O
of	O
third-party	O
Greasemonkey	B-Operating_System
scripts	O
that	O
enhance	O
and	O
extend	O
the	O
functionality	O
of	O
Flickr	B-Algorithm
.	O
</s>
<s>
In	O
2006	O
,	O
Flickr	B-Algorithm
was	O
the	O
second	O
most	O
extended	O
site	O
on	O
userscripts.org	O
.	O
</s>
<s>
Organizr	O
and	O
most	O
of	O
Flickr	B-Algorithm
's	O
other	O
text-editing	O
and	O
tagging	O
interfaces	O
use	O
Ajax	B-General_Concept
,	O
with	O
which	O
most	O
modern	O
browsers	B-Application
are	O
compliant	O
.	O
</s>
<s>
Flickr	B-Algorithm
uses	O
the	O
Geo	B-General_Concept
microformat	I-General_Concept
on	O
over	O
3	O
million	O
geotagged	O
images	O
.	O
</s>
<s>
According	O
to	O
the	O
company	O
,	O
Flickr	B-Algorithm
is	O
hosted	O
on	O
62	O
databases	O
across	O
124	O
servers	O
,	O
with	O
about	O
800,000	O
user	O
accounts	O
per	O
pair	O
of	O
servers	O
.	O
</s>
<s>
Based	O
on	O
information	O
compiled	O
by	O
highscalability.com,	O
the	O
MySQL	B-Application
databases	O
are	O
hosted	O
on	O
servers	O
that	O
are	O
Linux-based	O
(	O
from	O
Red	O
Hat	O
)	O
,	O
with	O
a	O
software	O
platform	O
that	O
includes	O
Apache	B-Application
,	O
PHP	B-Application
(	O
with	O
PEAR	O
and	O
Smarty	B-Language
)	O
,	O
shards	B-General_Concept
,	O
Memcached	B-Application
,	O
Squid	B-Protocol
,	O
Perl	B-Language
,	O
ImageMagick	B-Language
and	O
Java	B-Device
;	O
the	O
system	O
administration	O
tools	O
include	O
Ganglia	B-Language
,	O
SystemImager	O
,	O
Subcon	O
and	O
CVSup	O
.	O
</s>
<s>
Signed-in	O
Flickr	B-Algorithm
users	O
can	O
"	O
Follow	O
"	O
the	O
Photostreams	O
of	O
other	O
Flickr	B-Algorithm
photographers	O
.	O
</s>
<s>
Groups	O
are	O
another	O
major	O
means	O
of	O
interaction	O
with	O
fellow	O
members	O
of	O
Flickr	B-Algorithm
around	O
common	O
photography	O
interests	O
.	O
</s>
<s>
A	O
Flickr	B-Algorithm
Group	O
can	O
be	O
started	O
by	O
any	O
Flickr	B-Algorithm
user	O
,	O
who	O
becomes	O
its	O
administrator	O
and	O
can	O
appoint	O
moderators	O
.	O
</s>
<s>
The	O
administrator	O
of	O
the	O
Flickr	B-Algorithm
group	O
can	O
monitor	O
and	O
set	O
restrictions	O
for	O
the	O
group	O
,	O
assign	O
awards	O
to	O
members	O
,	O
and	O
may	O
curate	O
and	O
organize	O
the	O
photo	O
content	O
.	O
</s>
<s>
"	O
Galleries	O
"	O
of	O
photos	O
from	O
other	O
photostreams	O
may	O
be	O
curated	O
by	O
any	O
signed-up	O
Flickr	B-Algorithm
user	O
,	O
provided	O
the	O
feature	O
is	O
not	O
disabled	O
by	O
the	O
photo	O
's	O
uploader	O
,	O
these	O
are	O
then	O
publicly	O
viewable	O
.	O
</s>
<s>
Any	O
Flickr	B-Algorithm
user	O
can	O
post	O
comments	O
to	O
a	O
Flickr	B-Algorithm
photo	O
on	O
its	O
photopage	O
,	O
unless	O
this	O
has	O
been	O
disabled	O
by	O
the	O
uploader	O
,	O
and	O
users	O
can	O
"	O
favorite	O
"	O
a	O
photo	O
.	O
</s>
<s>
Users	O
of	O
Windows	B-Device
Photo	I-Device
Gallery	I-Device
,	O
Apple	O
's	O
iPhoto	B-Operating_System
(	O
version	O
8	O
)	O
,	O
Adobe	O
's	O
Lightroom	O
3.2	O
,	O
Apple	O
's	O
Aperture	B-Operating_System
(	O
version	O
3.0	O
)	O
,	O
darktable	B-Language
,	O
and	O
digiKam	B-Language
have	O
the	O
ability	O
to	O
upload	O
their	O
photos	O
directly	O
to	O
Flickr	B-Algorithm
.	O
</s>
<s>
They	O
can	O
also	O
automatically	O
update	O
their	O
status	O
on	O
other	O
social	O
networking	O
services	O
when	O
they	O
upload	O
their	O
images	O
to	O
Flickr	B-Algorithm
.	O
</s>
<s>
Flickr	B-Algorithm
provides	O
a	O
desktop	O
client	O
for	O
Mac	B-Application
OS	I-Application
X	I-Application
and	O
Windows	O
that	O
allows	O
users	O
to	O
upload	O
photos	O
without	O
using	O
the	O
web	O
interface	O
.	O
</s>
<s>
Uploadr	O
allows	O
drag-and-drop	O
batch	O
uploading	O
of	O
photos	O
,	O
the	O
setting	O
of	O
tags	B-General_Concept
and	O
descriptions	O
for	O
each	O
batch	O
,	O
and	O
the	O
editing	O
of	O
privacy	O
settings	O
.	O
</s>
<s>
Flickr	B-Algorithm
has	O
entered	O
into	O
partnerships	O
with	O
many	O
third	O
parties	O
.	O
</s>
<s>
Flickr	B-Algorithm
had	O
a	O
partnership	O
with	O
the	O
Picnik	B-Application
online	O
photo-editing	O
application	O
that	O
included	O
a	O
reduced-feature	O
version	O
of	O
Picnik	B-Application
built	O
into	O
Flickr	B-Algorithm
as	O
a	O
default	O
photo	O
editor	O
.	O
</s>
<s>
On	O
April	O
5	O
,	O
2012	O
,	O
Flickr	B-Algorithm
replaced	O
Picnik	B-Application
with	O
Aviary	B-Application
as	O
its	O
default	O
photo	O
editor	O
.	O
</s>
<s>
In	O
addition	O
to	O
using	O
commercial	O
mapping	O
data	O
,	O
Flickr	B-Algorithm
now	O
uses	O
OpenStreetMap	O
mapping	O
for	O
various	O
cities	O
;	O
this	O
began	O
with	O
Beijing	O
during	O
the	O
run-up	O
to	O
the	O
2008	O
Olympic	O
games	O
.	O
</s>
<s>
OpenStreetMap	O
data	O
is	O
collected	O
by	O
volunteers	O
and	O
is	O
available	O
under	O
the	O
Open	B-General_Concept
Database	I-General_Concept
License	I-General_Concept
.	O
</s>
<s>
Flickr	B-Algorithm
offers	O
printing	O
of	O
various	O
forms	O
of	O
merchandise	O
,	O
including	O
business	O
cards	O
,	O
photo	O
books	O
,	O
stationery	O
,	O
personalized	O
credit	O
cards	O
and	O
large-size	O
prints	O
from	O
companies	O
such	O
as	O
Moo	O
,	O
Blurb	O
,	O
Tiny	O
Prints	O
,	O
Capital	O
One	O
,	O
Imagekind	O
,	O
and	O
QOOP	O
.	O
</s>
<s>
The	O
Flickr	B-Algorithm
partnership	O
with	O
Getty	O
Images	O
to	O
sell	O
stock	O
photos	O
from	O
users	O
is	O
under	O
review	O
as	O
of	O
early	O
2014	O
.	O
</s>
<s>
In	O
March	O
2007	O
,	O
Flickr	B-Algorithm
added	O
new	O
content	O
filtering	O
controls	O
that	O
let	O
members	O
specify	O
by	O
default	O
what	O
types	O
of	O
images	O
they	O
generally	O
upload	O
(	O
photo	O
,	O
art/illustration	O
,	O
or	O
screenshot	B-Application
)	O
and	O
how	O
"	O
safe	O
"	O
(	O
i.e.	O
,	O
unlikely	O
to	O
offend	O
others	O
)	O
their	O
images	O
are	O
,	O
as	O
well	O
as	O
specify	O
that	O
information	O
for	O
specific	O
images	O
individually	O
.	O
</s>
<s>
There	O
are	O
some	O
restrictions	O
on	O
searches	O
for	O
certain	O
types	O
of	O
users	O
:	O
non-members	O
must	O
always	O
use	O
SafeSearch	O
,	O
which	O
omits	O
images	O
noted	O
as	O
potentially	O
offensive	O
,	O
while	O
members	O
whose	O
Yahoo	B-Application
!	I-Application
</s>
<s>
The	O
system	O
achieves	O
a	O
fairly	O
good	O
separation	O
of	O
family-friendly	O
photos	O
and	O
adult	O
content	O
;	O
generic	O
image	B-Algorithm
searches	O
normally	O
produce	O
no	O
pornographic	O
results	O
,	O
with	O
the	O
visibility	O
of	O
adult	O
content	O
restricted	O
to	O
users	O
and	O
dedicated	O
Flickr	B-Algorithm
communities	O
who	O
have	O
opted	O
into	O
viewing	O
it	O
.	O
</s>
<s>
Flickr	B-Algorithm
has	O
used	O
this	O
filtering	O
system	O
to	O
change	O
the	O
level	O
of	O
accessibility	O
to	O
"	O
unsafe	O
"	O
content	O
for	O
entire	O
nations	O
,	O
including	O
South	O
Korea	O
,	O
Hong	O
Kong	O
and	O
Germany	O
.	O
</s>
<s>
Flickr	B-Algorithm
offers	O
users	O
the	O
ability	O
to	O
either	O
release	O
their	O
images	O
under	O
certain	O
common	O
usage	O
licenses	O
or	O
label	O
them	O
as	O
"	O
all	O
rights	O
reserved	O
"	O
.	O
</s>
<s>
As	O
with	O
"	O
tags	B-General_Concept
"	O
,	O
the	O
site	O
allows	O
easy	O
searching	O
of	O
only	O
those	O
images	O
that	O
fall	O
under	O
a	O
specific	O
license	O
.	O
</s>
<s>
On	O
January	O
16	O
,	O
2008	O
,	O
Flickr	B-Algorithm
launched	O
a	O
program	O
called	O
"	O
The	O
Commons	O
on	O
Flickr.	O
"	O
</s>
<s>
According	O
to	O
Flickr	B-Algorithm
,	O
the	O
goal	O
of	O
the	O
program	O
is	O
to	O
"	O
firstly	O
show	O
you	O
hidden	O
treasures	O
in	O
the	O
world	O
's	O
public	O
photography	O
archives	O
,	O
and	O
secondly	O
to	O
show	O
how	O
your	O
input	O
and	O
knowledge	O
can	O
help	O
make	O
these	O
collections	O
even	O
richer.	O
"	O
</s>
<s>
In	O
May	O
2009	O
,	O
White	B-Application
House	I-Application
official	O
photographer	O
Pete	O
Souza	O
began	O
using	O
Flickr	B-Algorithm
as	O
a	O
conduit	O
for	O
releasing	O
White	B-Application
House	I-Application
photos	O
.	O
</s>
<s>
Flickr	B-Algorithm
later	O
created	O
a	O
new	O
license	O
which	O
identified	O
them	O
as	O
"	O
United	O
States	O
Government	O
Work	O
"	O
,	O
which	O
does	O
not	O
carry	O
any	O
copyright	O
restrictions	O
.	O
</s>
<s>
In	O
March	O
2015	O
,	O
Flickr	B-Algorithm
added	O
the	O
Creative	O
Commons	O
Public	O
Domain	O
Mark	O
and	O
Creative	O
Commons	O
Zero	O
(	O
CC0	O
)	O
to	O
its	O
licensing	O
options	O
.	O
</s>
<s>
Flickr	B-Algorithm
became	O
an	O
immediate	O
success	O
and	O
is	O
seen	O
as	O
a	O
successful	O
example	O
of	O
"	O
Web	O
2.0	O
"	O
,	O
and	O
a	O
year	O
later	O
was	O
purchased	O
by	O
Yahoo	B-Application
!	I-Application
.	O
</s>
<s>
Initially	O
the	O
site	O
was	O
most	O
popular	O
with	O
professional	O
photographers	O
and	O
graphic	O
designers	O
as	O
well	O
as	O
bloggers	O
who	O
used	O
it	O
as	O
an	O
image	B-Algorithm
repository	O
.	O
</s>
<s>
In	O
2007	O
,	O
Flickr	B-Algorithm
was	O
the	O
19th	O
most	O
popular	O
website	O
on	O
the	O
Internet	O
according	O
to	O
its	O
Alexa	O
Rank	O
.	O
</s>
<s>
However	O
,	O
since	O
then	O
,	O
its	O
popularity	O
has	O
declined	O
relative	O
to	O
social	O
media	O
platforms	B-General_Concept
with	O
photo	B-Algorithm
sharing	I-Algorithm
capabilities	O
(	O
such	O
as	O
Facebook	B-Application
and	O
Instagram	B-Application
)	O
,	O
as	O
well	O
as	O
cloud	O
file	O
storage	O
services	O
(	O
such	O
as	O
Dropbox	B-Application
)	O
.	O
</s>
<s>
By	O
2021	O
,	O
Flickr	B-Algorithm
's	O
Alexa	O
Rank	O
declined	O
significantly	O
,	O
yet	O
indicated	O
that	O
the	O
website	O
was	O
still	O
among	O
the	O
top	O
500	O
most	O
popular	O
websites	O
globally	O
.	O
</s>
<s>
On	O
June	O
12	O
,	O
2007	O
,	O
in	O
the	O
wake	O
of	O
the	O
rollout	O
of	O
localized	O
language	O
versions	O
of	O
the	O
site	O
,	O
Flickr	B-Algorithm
implemented	O
a	O
user-side	O
rating	O
system	O
for	O
filtering	O
out	O
potentially	O
controversial	O
photos	O
.	O
</s>
<s>
Simultaneously	O
,	O
users	O
with	O
accounts	O
registered	O
with	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Many	O
Flickr	B-Algorithm
users	O
,	O
particularly	O
in	O
Germany	O
,	O
protested	O
against	O
the	O
new	O
restrictions	O
,	O
claiming	O
unwanted	O
censorship	O
from	O
Flickr	B-Algorithm
and	O
Yahoo	B-Application
.	O
</s>
<s>
Flickr	B-Algorithm
management	O
,	O
unwilling	O
to	O
go	O
into	O
legal	O
details	O
,	O
implied	O
that	O
the	O
reason	O
for	O
the	O
stringent	O
filtering	O
was	O
some	O
unusually	O
strict	O
age-verification	O
laws	O
in	O
Germany	O
.	O
</s>
<s>
Initial	O
reports	O
indicated	O
that	O
Flickr	B-Algorithm
's	O
action	O
was	O
a	O
sensible	O
,	O
if	O
unattractive	O
,	O
precaution	O
against	O
prosecution	O
,	O
although	O
later	O
coverage	O
implied	O
that	O
Flickr	B-Algorithm
's	O
action	O
may	O
have	O
been	O
unnecessarily	O
strict	O
.	O
</s>
<s>
On	O
June	O
20	O
,	O
2007	O
,	O
Flickr	B-Algorithm
reacted	O
by	O
granting	O
German	O
users	O
access	O
to	O
"	O
moderate	O
"	O
(	O
but	O
not	O
"	O
restricted	O
"	O
)	O
images	O
,	O
and	O
hinted	O
at	O
a	O
future	O
solution	O
for	O
Germany	O
,	O
involving	O
advanced	O
age-verification	O
procedures	O
.	O
</s>
<s>
Since	O
June	O
1	O
,	O
2009	O
,	O
Flickr	B-Algorithm
has	O
been	O
blocked	O
in	O
China	O
in	O
advance	O
of	O
the	O
20th	O
anniversary	O
of	O
the	O
Tiananmen	O
Square	O
protests	O
of	O
1989	O
.	O
</s>
<s>
Michael	O
Arrington	O
of	O
TechCrunch	O
and	O
the	O
Electronic	O
Frontier	O
Foundation	O
have	O
criticised	O
Flickr	B-Algorithm
for	O
its	O
heavy-handed	O
implementation	O
of	O
the	O
Digital	O
Millennium	O
Copyright	O
Act	O
(	O
DMCA	O
)	O
and	O
Online	O
Copyright	O
Infringement	O
Liability	O
Limitation	O
Act	O
(	O
OCILLA	O
)	O
.	O
</s>
<s>
Under	O
OCILLA	O
,	O
a	O
service	O
provider	O
such	O
as	O
Flickr	B-Algorithm
is	O
obliged	O
to	O
delete	O
or	O
disable	O
access	O
to	O
content	O
as	O
soon	O
as	O
they	O
receive	O
an	O
official	O
notice	O
of	O
infringement	O
,	O
to	O
maintain	O
protection	O
from	O
liability	O
.	O
</s>
<s>
After	O
having	O
one	O
of	O
his	O
own	O
pictures	O
taken	O
down	O
following	O
an	O
incorrect	O
DMCA	O
claim	O
,	O
British	O
comedian	O
Dave	O
Gorman	O
researched	O
the	O
issue	O
and	O
concluded	O
that	O
if	O
the	O
Flickr	B-Algorithm
user	O
was	O
not	O
based	O
in	O
the	O
United	O
States	O
or	O
they	O
were	O
,	O
but	O
the	O
person	O
filing	O
the	O
notice	O
of	O
infringement	O
was	O
not	O
,	O
Flickr	B-Algorithm
deleted	O
the	O
disputed	O
content	O
immediately	O
.	O
</s>
<s>
Even	O
if	O
the	O
user	O
could	O
successfully	O
demonstrate	O
that	O
the	O
content	O
did	O
not	O
infringe	O
upon	O
any	O
copyright	O
,	O
Flickr	B-Algorithm
did	O
not	O
,	O
according	O
to	O
Gorman	O
,	O
replace	O
the	O
deleted	O
content	O
.	O
</s>
<s>
Shortly	O
afterward	O
,	O
Flickr	B-Algorithm
changed	O
its	O
policy	O
.	O
</s>
<s>
In	O
2019	O
,	O
Flickr	B-Algorithm
added	O
new	O
theft	O
detection	O
tool	O
options	O
to	O
certain	O
users	O
.	O
</s>
<s>
Some	O
subscribers	O
will	O
be	O
provided	O
"	O
copy-protection	O
tools	O
that	O
can	O
detect	O
if	O
their	O
images	O
have	O
been	O
used	O
without	O
permission	O
,	O
"	O
the	O
BBC	O
reported	O
in	O
2019	O
,	O
noting	O
"	O
Flickr	B-Algorithm
Pro	O
subscribers	O
will	O
be	O
able	O
to	O
monitor	O
up	O
to	O
1,000	O
images	O
and	O
send	O
automated	O
copyright	O
claims	O
to	O
people	O
or	O
companies	O
that	O
use	O
their	O
photos.	O
"	O
</s>
<s>
In	O
November	O
2014	O
,	O
Flickr	B-Algorithm
announced	O
that	O
it	O
would	O
sell	O
wall-sized	O
prints	O
of	O
photos	O
from	O
the	O
service	O
that	O
are	O
licensed	O
under	O
Creative	O
Commons	O
licenses	O
allowing	O
commercial	O
use	O
.	O
</s>
<s>
Although	O
its	O
use	O
of	O
the	O
photos	O
in	O
this	O
manner	O
is	O
legal	O
and	O
allowed	O
under	O
the	O
licenses	O
,	O
Flickr	B-Algorithm
was	O
criticized	O
by	O
users	O
for	O
what	O
they	O
perceived	O
to	O
be	O
unfair	O
exploitation	O
of	O
artists	O
 '	O
works	O
,	O
as	O
all	O
the	O
profits	O
from	O
these	O
offerings	O
go	O
to	O
Yahoo	B-Application
!	I-Application
</s>
<s>
On	O
December	O
19	O
,	O
2014	O
,	O
Flickr	B-Algorithm
General	O
Manager	O
Bernardo	O
Hernandez	O
announced	O
they	O
would	O
pull	O
all	O
Creative	O
Commons-licensed	O
images	O
from	O
the	O
program	O
and	O
issue	O
refunds	O
,	O
stating	O
that	O
"	O
Subsequently	O
,	O
we	O
'll	O
work	O
closely	O
with	O
Creative	O
Commons	O
to	O
come	O
back	O
with	O
programs	O
that	O
align	O
better	O
with	O
our	O
community	O
values.	O
"	O
</s>
<s>
On	O
November	O
1	O
,	O
2018	O
,	O
Flickr	B-Algorithm
announced	O
new	O
restrictions	O
for	O
its	O
users	O
.	O
</s>
<s>
On	O
March	O
17	O
,	O
2022	O
,	O
Flickr	B-Algorithm
revealed	O
that	O
it	O
had	O
not	O
in	O
fact	O
deleted	O
any	O
photos	O
for	O
exceeding	O
storage	O
limits	O
.	O
</s>
