<s>
Tumblr	B-Application
(	O
stylized	O
as	O
tumblr	B-Application
;	O
pronounced	O
"	O
tumbler	B-Application
"	O
)	O
is	O
a	O
microblogging	B-Application
and	O
social	O
networking	O
website	O
founded	O
by	O
David	O
Karp	O
in	O
2007	O
and	O
currently	O
owned	O
by	O
American	O
company	O
Automattic	O
.	O
</s>
<s>
Tumblr	B-Application
hosts	O
more	O
than	O
572	O
million	O
blogs	O
.	O
</s>
<s>
Development	O
of	O
Tumblr	B-Application
began	O
in	O
2006	O
during	O
a	O
two-week	O
gap	O
between	O
contracts	O
at	O
David	O
Karp	O
's	O
software	O
consulting	O
company	O
,	O
Davidville	O
.	O
</s>
<s>
Karp	O
had	O
been	O
interested	O
in	O
tumblelogs	B-Application
(	O
short-form	O
blogs	O
,	O
hence	O
the	O
name	O
Tumblr	B-Application
)	O
for	O
some	O
time	O
and	O
was	O
waiting	O
for	O
one	O
of	O
the	O
established	O
blogging	O
platforms	O
to	O
introduce	O
their	O
own	O
tumblelogging	O
platform	O
.	O
</s>
<s>
Tumblr	B-Application
was	O
launched	O
in	O
February	O
2007	O
,	O
and	O
within	O
two	O
weeks	O
had	O
gained	O
75,000	O
users	O
.	O
</s>
<s>
Arment	O
left	O
the	O
company	O
in	O
September	O
2010	O
to	O
work	O
on	O
Instapaper	B-Application
.	O
</s>
<s>
In	O
June	O
2012	O
,	O
Tumblr	B-Application
featured	O
its	O
first	O
major	O
brand	O
advertising	O
campaign	O
in	O
conjunction	O
with	O
Adidas	O
,	O
who	O
launched	O
an	O
official	O
soccer	O
Tumblr	B-Application
blog	O
and	O
bought	O
placements	O
on	O
the	O
user	O
dashboard	O
.	O
</s>
<s>
This	O
launch	O
came	O
only	O
two	O
months	O
after	O
Tumblr	B-Application
announced	O
it	O
would	O
be	O
moving	O
towards	O
paid	O
advertising	O
on	O
its	O
site	O
.	O
</s>
<s>
On	O
May	O
20	O
,	O
2013	O
,	O
it	O
was	O
announced	O
that	O
Yahoo	B-Application
and	O
Tumblr	B-Application
had	O
reached	O
an	O
agreement	O
for	O
Yahoo	B-Application
!	I-Application
</s>
<s>
Inc	O
.	O
to	O
acquire	O
Tumblr	B-Application
for	O
$1.1	O
billion	O
in	O
cash	O
.	O
</s>
<s>
Many	O
of	O
Tumblr	B-Application
's	O
users	O
were	O
unhappy	O
with	O
the	O
news	O
,	O
causing	O
some	O
to	O
start	O
a	O
petition	O
,	O
achieving	O
nearly	O
170,000	O
signatures	O
.	O
</s>
<s>
Advertising	O
sales	O
goals	O
were	O
not	O
met	O
and	O
in	O
2016	O
Yahoo	B-Application
wrote	O
down	O
$712	O
million	O
of	O
Tumblr	B-Application
's	O
value	O
.	O
</s>
<s>
Verizon	O
Communications	O
acquired	O
Yahoo	B-Application
in	O
June	O
2017	O
,	O
and	O
placed	O
Yahoo	B-Application
and	O
Tumblr	B-Application
under	O
its	O
Oath	O
subsidiary	O
.	O
</s>
<s>
Karp	O
announced	O
in	O
November	O
2017	O
that	O
he	O
would	O
be	O
leaving	O
Tumblr	B-Application
by	O
the	O
end	O
of	O
the	O
year	O
.	O
</s>
<s>
Jeff	O
D'Onofrio	O
,	O
Tumblr	B-Application
's	O
president	O
and	O
COO	O
,	O
took	O
over	O
leading	O
the	O
company	O
.	O
</s>
<s>
In	O
March	O
2019	O
,	O
SimilarWeb	B-Application
estimated	O
Tumblr	B-Application
had	O
lost	O
30%	O
of	O
its	O
user	O
traffic	O
since	O
December	O
2018	O
,	O
when	O
the	O
site	O
had	O
introduced	O
a	O
stricter	O
content	O
policy	O
with	O
heavier	O
restrictions	O
on	O
adult	O
content	O
(	O
which	O
had	O
been	O
a	O
notable	O
draw	O
to	O
the	O
service	O
)	O
.	O
</s>
<s>
In	O
May	O
2019	O
,	O
it	O
was	O
reported	O
that	O
Verizon	O
was	O
considering	O
selling	O
the	O
site	O
due	O
to	O
its	O
continued	O
struggles	O
since	O
the	O
purchase	O
(	O
as	O
it	O
had	O
done	O
with	O
another	O
Yahoo	B-Application
property	O
,	O
Flickr	B-Algorithm
,	O
via	O
its	O
sale	O
to	O
SmugMug	B-Algorithm
)	O
.	O
</s>
<s>
Following	O
this	O
news	O
,	O
Pornhub	O
's	O
vice	O
president	O
publicly	O
expressed	O
interest	O
in	O
purchasing	O
Tumblr	B-Application
,	O
with	O
a	O
promise	O
to	O
reinstate	O
the	O
previous	O
adult	O
content	O
policies	O
.	O
</s>
<s>
On	O
August	O
12	O
,	O
2019	O
,	O
Verizon	O
Media	O
announced	O
that	O
it	O
would	O
sell	O
Tumblr	B-Application
to	O
Automattic	O
,	O
the	O
operator	O
of	O
blog	O
service	O
WordPress.com	B-Protocol
and	O
corporate	O
backer	O
of	O
the	O
open	B-Application
source	I-Application
blog	I-Application
software	I-Application
of	I-Application
the	I-Application
same	I-Application
name	I-Application
.	O
</s>
<s>
The	O
sale	O
was	O
for	O
an	O
undisclosed	O
amount	O
,	O
but	O
Axios	O
reported	O
that	O
the	O
sale	O
price	O
was	O
less	O
than	O
$3	O
million	O
,	O
a	O
significant	O
decrease	O
over	O
Yahoo	B-Application
's	O
original	O
purchase	O
price	O
.	O
</s>
<s>
Automattic	O
CEO	O
Matt	O
Mullenweg	O
stated	O
that	O
the	O
site	O
will	O
operate	O
as	O
a	O
complementary	O
service	O
to	O
WordPress.com,	O
and	O
that	O
there	O
were	O
no	O
plans	O
to	O
reverse	O
the	O
content	O
policy	O
decisions	O
made	O
during	O
Verizon	O
ownership	O
.	O
</s>
<s>
In	O
November	O
2022	O
,	O
Mullenweg	O
stated	O
that	O
Tumblr	B-Application
will	O
add	O
support	O
for	O
the	O
decentralized	O
social	O
networking	O
protocol	O
ActivityPub	B-Operating_System
.	O
</s>
<s>
Dashboard	O
:	O
The	O
dashboard	O
is	O
the	O
primary	O
tool	O
for	O
the	O
typical	O
Tumblr	B-Application
user	O
.	O
</s>
<s>
Users	O
are	O
also	O
able	O
to	O
connect	O
their	O
blogs	O
to	O
their	O
Twitter	B-Application
and	O
Facebook	O
accounts	O
;	O
so	O
whenever	O
they	O
make	O
a	O
post	O
,	O
it	O
will	O
also	O
be	O
sent	O
as	O
a	O
tweet	O
and	O
a	O
status	B-Application
update	I-Application
.	O
</s>
<s>
HTML	O
editing	O
:	O
Tumblr	B-Application
allows	O
users	O
to	O
edit	O
their	O
blog	O
's	O
theme	O
HTML	O
coding	O
to	O
control	O
the	O
appearance	O
of	O
their	O
blog	O
.	O
</s>
<s>
With	O
Tumblr	B-Application
's	O
2009	O
acquisition	O
of	O
Tumblerette	O
,	O
an	O
iOS	B-Application
application	I-Application
created	O
by	O
Jeff	O
Rock	O
and	O
Garrett	O
Ross	O
,	O
the	O
service	O
launched	O
its	O
official	O
iPhone	B-Device
app	O
.	O
</s>
<s>
The	O
site	O
became	O
available	O
to	O
BlackBerry	B-Operating_System
smartphones	O
on	O
April	O
17	O
,	O
2010	O
,	O
via	O
a	O
Mobelux	O
application	O
in	O
BlackBerry	B-Application
World	I-Application
.	O
</s>
<s>
In	O
June	O
2012	O
,	O
Tumblr	B-Application
released	O
a	O
new	O
version	O
of	O
its	O
iOS	B-Application
app	I-Application
,	O
Tumblr	B-Application
3.0	O
,	O
allowing	O
support	O
for	O
Spotify	B-Application
integration	O
,	O
hi-res	O
images	O
and	O
offline	O
access	O
.	O
</s>
<s>
An	O
app	O
for	O
Android	B-Application
is	O
also	O
available	O
.	O
</s>
<s>
A	O
Windows	B-Protocol
Phone	I-Protocol
app	O
was	O
released	O
on	O
April	O
23	O
,	O
2013	O
.	O
</s>
<s>
An	O
app	O
for	O
Google	B-Application
Glass	I-Application
was	O
released	O
on	O
May	O
16	O
,	O
2013	O
.	O
</s>
<s>
Tumblr	B-Application
blogs	O
have	O
the	O
option	O
to	O
allow	O
users	O
to	O
submit	O
questions	O
,	O
either	O
as	O
themselves	O
or	O
anonymously	O
,	O
to	O
the	O
blog	O
for	O
a	O
response	O
.	O
</s>
<s>
Tumblr	B-Application
also	O
previously	O
offered	O
a	O
"	O
fan	O
mail	O
"	O
function	O
,	O
allowing	O
users	O
to	O
send	O
messages	O
to	O
blogs	O
that	O
they	O
followed	O
.	O
</s>
<s>
On	O
November	O
10	O
,	O
2015	O
,	O
Tumblr	B-Application
introduced	O
an	O
integrated	O
instant	B-Application
messaging	I-Application
function	O
,	O
allowing	O
users	O
to	O
chat	O
with	O
other	O
Tumblr	B-Application
users	O
.	O
</s>
<s>
In	O
November	O
2019	O
,	O
Tumblr	B-Application
introduced	O
"	O
group	O
chats	O
"	O
—	O
ephemeral	O
chat	O
rooms	O
surfaced	O
via	O
searches	O
,	O
designed	O
to	O
allow	O
users	O
to	O
share	O
content	O
in	O
real-time	O
with	O
users	O
who	O
share	O
their	O
interests	O
.	O
</s>
<s>
In	O
May	O
2012	O
,	O
Tumblr	B-Application
launched	O
Storyboard	O
,	O
a	O
blog	O
managed	O
by	O
an	O
in-house	O
editorial	O
team	O
which	O
features	O
stories	O
and	O
videos	O
about	O
noteworthy	O
blogs	O
and	O
users	O
on	O
Tumblr	B-Application
.	I-Application
</s>
<s>
In	O
March	O
2018	O
,	O
Tumblr	B-Application
began	O
to	O
syndicate	O
original	O
video	O
content	O
from	O
Verizon-owned	O
video	O
network	O
go90	O
,	O
as	O
part	O
of	O
an	O
ongoing	O
integration	O
of	O
Oath	O
properties	O
,	O
and	O
reported	O
plans	O
to	O
wind	O
down	O
go90	O
in	O
favor	O
of	O
using	O
Oath	O
properties	O
to	O
distribute	O
its	O
content	O
instead	O
.	O
</s>
<s>
On	O
July	O
21	O
,	O
2021	O
,	O
Tumblr	B-Application
launched	O
Post+	O
for	O
some	O
beta	O
users	O
,	O
allowing	O
bloggers	O
to	O
monetize	O
their	O
content	O
.	O
</s>
<s>
Tumblr	B-Application
has	O
been	O
noted	O
for	O
the	O
socially	O
progressive	O
views	O
of	O
its	O
users	O
.	O
</s>
<s>
In	O
2011	O
,	O
the	O
service	O
was	O
most	O
popular	O
with	O
the	O
teen	O
and	O
college-aged	O
user	O
segments	O
with	O
half	O
of	O
Tumblr	B-Application
's	O
visitor	O
base	O
being	O
under	O
the	O
age	O
of	O
25	O
.	O
</s>
<s>
,	O
Tumblr	B-Application
hosted	O
over	O
465	O
million	O
blogs	O
and	O
more	O
than	O
172	O
billion	O
posts	O
in	O
total	O
with	O
over	O
21	O
million	O
posts	O
created	O
on	O
the	O
site	O
each	O
day	O
.	O
</s>
<s>
The	O
tags	O
are	O
prefaced	O
by	O
a	O
hashtag	O
and	O
separated	O
by	O
commas	O
,	O
and	O
spaces	O
and	O
special	O
characters	O
are	O
allowed	O
,	O
but	O
only	O
up	O
to	O
140	B-Application
characters	I-Application
total	O
per	O
tag	O
.	O
</s>
<s>
There	O
are	O
two	O
main	O
types	O
used	O
by	O
Tumblr	B-Application
users	O
:	O
descriptive	O
tagging	O
,	O
and	O
opinion	O
or	O
commentary	O
tagging	O
.	O
</s>
<s>
Tags	O
used	O
as	O
a	O
form	O
of	O
communication	O
are	O
unique	O
to	O
Tumblr	B-Application
,	O
and	O
are	O
typically	O
more	O
personal	O
,	O
expressing	O
opinions	O
,	O
reactions	O
,	O
meta-commentary	O
,	O
background	O
information	O
,	O
and	O
more	O
.	O
</s>
<s>
Multiple	O
researchers	O
looking	O
into	O
Tumblr	B-Application
have	O
found	O
that	O
the	O
website	O
is	O
often	O
used	O
as	O
for	O
community-building	O
and	O
a	O
place	O
to	O
explore	O
identity	O
formation	O
and	O
gender	O
expression	O
for	O
LGBT	O
groups	O
.	O
</s>
<s>
At	O
the	O
time	O
of	O
its	O
acquisition	O
by	O
Yahoo	B-Application
,	O
Tumblr	B-Application
was	O
described	O
by	O
technology	O
journalists	O
as	O
having	O
a	O
sizable	O
amount	O
of	O
pornographic	O
content	O
.	O
</s>
<s>
An	O
analysis	O
conducted	O
by	O
news	O
and	O
technology	O
site	O
TechCrunch	O
on	O
May	O
20	O
,	O
2013	O
,	O
showed	O
that	O
over	O
22%	O
of	O
all	O
traffic	O
in	O
and	O
out	O
of	O
Tumblr	B-Application
was	O
classified	O
as	O
pornography	O
.	O
</s>
<s>
In	O
addition	O
,	O
a	O
reported	O
16.45	O
%	O
of	O
blogs	O
on	O
Tumblr	B-Application
exclusively	O
contained	O
pornographic	O
material	O
.	O
</s>
<s>
Following	O
July	O
2013	O
and	O
its	O
acquisition	O
by	O
Yahoo	B-Application
,	O
Tumblr	B-Application
progressively	O
restricted	O
adult	O
content	O
on	O
the	O
site	O
.	O
</s>
<s>
In	O
July	O
2013	O
,	O
Tumblr	B-Application
began	O
to	O
filter	O
content	O
in	O
adult-tagged	O
blogs	O
from	O
appearing	O
in	O
search	O
results	O
and	O
tagged	O
displays	O
unless	O
the	O
user	O
was	O
logged	O
in	O
.	O
</s>
<s>
On	O
December	O
3	O
,	O
2018	O
,	O
Tumblr	B-Application
announced	O
that	O
effective	O
December	O
17	O
,	O
all	O
images	O
and	O
videos	O
depicting	O
sex	O
acts	O
,	O
and	O
real-life	O
images	O
and	O
videos	O
depicting	O
human	O
genitalia	O
or	O
"	O
female-presenting	O
"	O
nipples	O
,	O
would	O
be	O
banned	O
from	O
the	O
service	O
.	O
</s>
<s>
Shortly	O
prior	O
to	O
the	O
announcement	O
,	O
Tumblr	B-Application
's	O
Android	B-Application
app	O
was	O
patched	O
to	O
remove	O
the	O
ability	O
to	O
disable	O
Safe	O
Mode	O
.	O
</s>
<s>
The	O
change	O
faced	O
wide	O
criticism	O
among	O
Tumblr	B-Application
's	O
community	O
;	O
in	O
particular	O
,	O
it	O
has	O
been	O
argued	O
that	O
the	O
service	O
should	O
have	O
focused	O
on	O
other	O
major	O
issues	O
(	O
such	O
as	O
controlling	O
hate	O
speech	O
or	O
the	O
number	O
of	O
porn-related	O
spambots	B-Protocol
on	O
the	O
service	O
)	O
,	O
and	O
that	O
the	O
service	O
's	O
adult	O
community	O
provided	O
a	O
platform	O
for	O
sex	O
education	O
,	O
independent	O
adult	O
performers	O
(	O
especially	O
those	O
representing	O
LGBT	O
communities	O
who	O
feel	O
that	O
they	O
are	O
under-represented	O
by	O
a	O
heteronormative	O
mainstream	O
industry	O
)	O
seeking	O
an	O
outlet	O
for	O
their	O
work	O
,	O
and	O
those	O
seeking	O
a	O
safe	O
haven	O
from	O
"	O
over-policed	O
"	O
platforms	O
to	O
share	O
creative	O
work	O
with	O
adult	O
themes	O
.	O
</s>
<s>
Tumblr	B-Application
stated	O
that	O
it	O
was	O
using	O
various	O
algorithms	O
to	O
detect	O
potential	O
violations	O
,	O
in	O
combination	O
with	O
manual	O
reviews	O
.	O
</s>
<s>
On	O
the	O
day	O
the	O
ban	O
took	O
effect	O
,	O
Tumblr	B-Application
issued	O
a	O
new	O
post	O
clarifying	O
the	O
new	O
policy	O
,	O
showcasing	O
examples	O
of	O
adult	O
images	O
still	O
allowed	O
on	O
the	O
service	O
,	O
and	O
stating	O
that	O
it	O
"	O
fully	O
recognized	O
"	O
its	O
"	O
special	O
obligation	O
"	O
to	O
serving	O
its	O
LGBT	O
userbase	O
,	O
and	O
that	O
"	O
LGBTQ+	O
conversations	O
,	O
exploration	O
of	O
sexuality	O
and	O
gender	O
,	O
efforts	O
to	O
document	O
the	O
lives	O
and	O
challenges	O
of	O
those	O
in	O
the	O
sex	O
worker	O
industry	O
,	O
and	O
posts	O
with	O
pictures	O
,	O
videos	O
,	O
and	O
GIFs	O
of	O
gender	O
reassignment	O
surgery	O
are	O
all	O
examples	O
of	O
content	O
that	O
is	O
not	O
only	O
permitted	O
on	O
Tumblr	B-Application
but	O
actively	O
encouraged.	O
"	O
</s>
<s>
Wired	O
cited	O
multiple	O
potential	O
factors	O
in	O
the	O
ban	O
,	O
including	O
that	O
the	O
presence	O
of	O
adult	O
content	O
made	O
the	O
service	O
unappealing	O
to	O
potential	O
advertisers	O
,	O
the	O
Stop	O
Enabling	O
Sex	O
Traffickers	O
Act	O
(	O
a	O
U.S.	O
federal	O
law	O
which	O
makes	O
websites	O
liable	O
for	O
knowingly	O
assisting	O
or	O
facilitating	O
illegal	O
sex	O
trafficking	O
)	O
,	O
as	O
well	O
as	O
heavy	O
restrictions	O
on	O
adult	O
content	O
imposed	O
by	O
Apple	O
for	O
software	O
offered	O
on	O
the	O
iOS	B-Application
App	I-Application
Store	I-Application
(	O
which	O
similarly	O
prompted	O
several	O
Reddit	B-Application
clients	O
to	O
heavily	O
frustrate	O
the	O
ability	O
for	O
users	O
to	O
access	O
forums	O
on	O
the	O
site	O
that	O
contain	O
adult	O
content	O
)	O
.	O
</s>
<s>
In	O
January	O
2022	O
,	O
Tumblr	B-Application
reached	O
a	O
settlement	O
with	O
New	O
York	O
City	O
's	O
Commission	O
on	O
Human	O
Rights	O
,	O
which	O
had	O
claimed	O
that	O
the	O
2018	O
ban	O
on	O
adult	O
content	O
disproportionately	O
affected	O
LGBTQ+	O
users	O
.	O
</s>
<s>
In	O
November	O
2022	O
,	O
Tumblr	B-Application
changed	O
its	O
rules	O
to	O
allow	O
nudity	O
,	O
but	O
not	O
sexually	O
explicit	O
images	O
.	O
</s>
<s>
Tumblr	B-Application
's	O
headquarters	O
is	O
at	O
770	O
Broadway	O
in	O
New	O
York	O
City	O
.	O
</s>
<s>
,	O
Tumblr	B-Application
had	O
411	O
employees	O
.	O
</s>
<s>
,	O
Tumblr	B-Application
had	O
received	O
about	O
$125	O
million	O
of	O
funding	O
from	O
investors	O
.	O
</s>
<s>
In	O
its	O
first	O
round	O
of	O
funding	O
in	O
October	O
2007	O
,	O
Tumblr	B-Application
raised	O
$	O
750,000	O
from	O
Spark	O
Capital	O
and	O
Union	O
Square	O
Ventures	O
.	O
</s>
<s>
In	O
December	O
2010	O
,	O
Tumblr	B-Application
raised	O
$30	O
million	O
in	O
Series	O
D	O
funding	O
.	O
</s>
<s>
Tumblr	B-Application
made	O
$13	O
million	O
in	O
revenue	O
in	O
2012	O
and	O
hoped	O
to	O
make	O
$100	O
million	O
in	O
2013	O
.	O
</s>
<s>
Tumblr	B-Application
reportedly	O
spent	O
$25	O
million	O
to	O
fund	O
operations	O
in	O
2012	O
.	O
</s>
<s>
In	O
2013	O
,	O
Tumblr	B-Application
began	O
allowing	O
companies	O
to	O
pay	O
to	O
promote	O
their	O
own	O
posts	O
to	O
a	O
larger	O
audience	O
.	O
</s>
<s>
Tumblr	B-Application
Head	O
of	O
Sales	O
,	O
Lee	O
Brown	O
,	O
has	O
quoted	O
the	O
average	O
ad	O
purchase	O
on	O
Tumblr	B-Application
to	O
be	O
nearly	O
six	O
figures	O
.	O
</s>
<s>
Tumblr	B-Application
also	O
allows	O
premium	O
theme	O
templates	O
to	O
be	O
sold	O
for	O
use	O
by	O
blogs	O
.	O
</s>
<s>
In	O
February	O
2022	O
,	O
Tumblr	B-Application
launched	O
an	O
ad-free	O
subscription	O
option	O
that	O
removes	O
the	O
marketing	O
from	O
microblogs	B-Application
for	O
$5	O
per	O
month	O
,	O
or	O
$40	O
per	O
year	O
.	O
</s>
<s>
Tumblr	B-Application
has	O
received	O
criticism	O
for	O
copyright	O
violations	O
by	O
participating	O
bloggers	O
;	O
however	O
,	O
Tumblr	B-Application
accepts	O
Digital	O
Millennium	O
Copyright	O
Act	O
(	O
DMCA	O
)	O
take-down	O
notices	O
.	O
</s>
<s>
Tumblr	B-Application
's	O
visual	O
appeal	O
has	O
made	O
it	O
ideal	O
for	O
photoblogs	O
that	O
often	O
include	O
copyrighted	O
works	O
from	O
others	O
that	O
are	O
re-published	O
without	O
payment	O
.	O
</s>
<s>
Tumblr	B-Application
users	O
can	O
post	O
unoriginal	O
content	O
by	O
"	O
Reblogging	O
"	O
,	O
a	O
feature	O
on	O
Tumblr	B-Application
that	O
allows	O
users	O
to	O
re-post	O
content	O
taken	O
from	O
another	O
blog	O
onto	O
their	O
own	O
blog	O
with	O
attribution	O
.	O
</s>
<s>
Tumblr	B-Application
has	O
been	O
forced	O
to	O
manage	O
spam	O
and	O
security	O
problems	O
.	O
</s>
<s>
On	O
December	O
3	O
,	O
2012	O
,	O
Tumblr	B-Application
was	O
attacked	O
by	O
a	O
cross-site	O
scripting	O
worm	O
deployed	O
by	O
the	O
Internet	O
troll	O
group	O
Gay	O
Nigger	O
Association	O
of	O
America	O
.	O
</s>
<s>
In	O
2015	O
,	O
Tumblr	B-Application
faced	O
criticism	O
by	O
users	O
for	O
changes	O
to	O
its	O
reblog	O
mechanisms	O
.	O
</s>
<s>
Tumblr	B-Application
staff	O
argued	O
that	O
the	O
change	O
was	O
intended	O
to	O
combat	O
"	O
misattribution	O
"	O
,	O
though	O
this	O
move	O
was	O
met	O
by	O
criticism	O
from	O
'	O
ask	O
blogs	O
 '	O
and	O
"	O
RP	O
blogs	O
 '	O
,	O
which	O
often	O
shortened	O
long	O
chains	O
of	O
reblogs	O
between	O
users	O
to	O
improve	O
readability	O
.	O
</s>
<s>
In	O
September	O
2015	O
,	O
Tumblr	B-Application
changed	O
how	O
threads	O
of	O
comments	O
on	O
reblogged	O
posts	O
are	O
displayed	O
;	O
rather	O
than	O
a	O
nested	O
view	O
with	O
indentations	O
for	O
each	O
post	O
,	O
all	O
reblogs	O
are	O
now	O
shown	O
in	O
a	O
flat	O
view	O
,	O
and	O
user	O
avatars	O
were	O
also	O
added	O
.	O
</s>
<s>
While	O
Tumblr	B-Application
's	O
userbase	O
has	O
generally	O
been	O
received	O
as	O
accommodating	O
people	O
from	O
a	O
wide	O
range	O
of	O
ideologies	O
and	O
identities	O
,	O
a	O
common	O
point	O
of	O
criticism	O
is	O
that	O
attitudes	O
from	O
users	O
on	O
the	O
site	O
stifle	O
discussion	O
and	O
discourse	O
.	O
</s>
<s>
In	O
February	O
2012	O
,	O
Tumblr	B-Application
banned	O
blogs	O
that	O
promote	O
or	O
advocate	O
suicide	O
,	O
self-harm	O
and	O
eating	O
disorders	O
(	O
pro-ana	O
)	O
.	O
</s>
<s>
The	O
suicide	O
of	O
a	O
British	O
teenager	O
,	O
Tallulah	O
Wilson	O
,	O
raised	O
the	O
issue	O
of	O
suicide	O
and	O
self-harm	O
promotion	O
on	O
Tumblr	B-Application
as	O
Wilson	O
was	O
reported	O
to	O
have	O
maintained	O
a	O
self-harm	O
blog	O
on	O
the	O
site	O
.	O
</s>
<s>
In	O
response	O
to	O
the	O
Wilson	O
case	O
,	O
Maria	O
Miller	O
,	O
the	O
UK	O
's	O
minister	O
for	O
culture	O
,	O
media	O
,	O
and	O
sport	O
,	O
said	O
that	O
social	O
media	O
sites	O
like	O
Tumblr	B-Application
need	O
to	O
remove	O
"	O
toxic	O
"	O
self-harm	O
content	O
.	O
</s>
<s>
Searching	O
terms	O
like	O
"	O
depression	O
"	O
,	O
"	O
anxiety	O
"	O
,	O
and	O
"	O
suicide	O
"	O
on	O
Tumblr	B-Application
now	O
brings	O
up	O
a	O
PSA	O
page	O
directing	O
the	O
user	O
to	O
resources	O
like	O
the	O
national	O
suicide	O
lifeline	O
,	O
and	O
7	O
Cups	O
;	O
as	O
well	O
as	O
an	O
option	O
to	O
continue	O
to	O
the	O
search	O
results	O
.	O
</s>
<s>
There	O
are	O
concerns	O
of	O
some	O
Tumblr	B-Application
posts	O
glorifying	O
suicide	O
and	O
depression	O
among	O
young	O
people	O
.	O
</s>
<s>
In	O
February	O
2018	O
,	O
BuzzFeed	O
published	O
a	O
report	O
claiming	O
that	O
Tumblr	B-Application
was	O
utilized	O
as	O
a	O
distribution	O
channel	O
for	O
Russian	O
agents	O
to	O
influence	O
American	O
voting	O
habits	O
during	O
the	O
2016	O
presidential	O
election	O
.	O
</s>
<s>
Despite	O
policies	O
forbidding	O
hate	O
speech	O
,	O
Tumblr	B-Application
has	O
been	O
noted	O
for	O
hosting	O
content	O
from	O
Nazis	O
and	O
white	O
supremacists	O
.	O
</s>
<s>
In	O
May	O
2020	O
,	O
Tumblr	B-Application
announced	O
that	O
it	O
will	O
remove	O
reblogs	O
of	O
terminated	O
hate	O
speech	O
posts	O
,	O
specifically	O
Nazi	O
and	O
white	O
supremacist	O
content	O
.	O
</s>
<s>
Several	O
countries	O
have	O
blocked	O
access	O
to	O
Tumblr	B-Application
because	O
of	O
pornography	O
,	O
religious	O
extremism	O
or	O
LGBT	O
content	O
.	O
</s>
<s>
In	O
February	O
2016	O
,	O
the	O
Indonesian	O
government	O
temporarily	O
blocked	O
access	O
to	O
Tumblr	B-Application
within	O
the	O
country	O
because	O
the	O
site	O
hosted	O
pages	O
that	O
carried	O
pornography	O
.	O
</s>
<s>
The	O
government	O
shortly	O
reversed	O
its	O
decision	O
to	O
block	O
the	O
site	O
and	O
said	O
it	O
had	O
asked	O
Tumblr	B-Application
to	O
self-censor	O
its	O
pornographic	O
content	O
.	O
</s>
<s>
In	O
November	O
2018	O
,	O
Tumblr	B-Application
's	O
iOS	B-Application
app	I-Application
was	O
removed	O
by	O
Apple	O
from	O
its	O
App	B-Application
Store	I-Application
after	O
illegal	O
child	O
pornography	O
images	O
were	O
found	O
on	O
the	O
service	O
.	O
</s>
<s>
Tumblr	B-Application
stated	O
that	O
all	O
images	O
uploaded	O
to	O
the	O
service	O
are	O
scanned	O
against	O
an	O
industry	O
database	O
,	O
but	O
that	O
a	O
"	O
routine	O
audit	O
"	O
had	O
revealed	O
images	O
that	O
had	O
not	O
yet	O
been	O
added	O
to	O
the	O
database	O
.	O
</s>
<s>
In	O
the	O
wake	O
of	O
the	O
incident	O
,	O
a	O
number	O
of	O
Tumblr	B-Application
blogs	O
—	O
particularly	O
those	O
dealing	O
primarily	O
in	O
adult-tagged	O
artwork	O
such	O
as	O
erotica	O
,	O
as	O
well	O
as	O
art	O
study	O
and	O
anatomy	O
resources	O
—	O
were	O
also	O
deleted	O
,	O
with	O
affected	O
users	O
taking	O
to	O
other	O
platforms	O
(	O
such	O
as	O
Twitter	B-Application
)	O
to	O
warn	O
others	O
and	O
complain	O
about	O
the	O
deletions	O
,	O
as	O
well	O
as	O
encourage	O
users	O
to	O
back	O
up	O
their	O
blog	O
's	O
contents	O
.	O
</s>
<s>
Tumblr	B-Application
subsequently	O
removed	O
the	O
ability	O
to	O
disable	O
"	O
Safe	O
Mode	O
"	O
from	O
its	O
Android	B-Application
app	O
,	O
and	O
announced	O
a	O
wider	O
ban	O
on	O
explicit	O
images	O
of	O
sex	O
acts	O
and	O
nudity	O
on	O
the	O
platform	O
with	O
certain	O
limited	O
exceptions	O
.	O
</s>
<s>
Tumblr	B-Application
deployed	O
an	O
automatic	B-Application
content	I-Application
recognition	I-Application
system	O
which	O
resulted	O
in	O
many	O
non-pornographic	O
images	O
being	O
removed	O
from	O
the	O
platform	O
.	O
</s>
<s>
In	O
December	O
2018	O
,	O
about	O
a	O
month	O
after	O
it	O
was	O
initially	O
banned	O
,	O
Tumblr	B-Application
's	O
iOS	B-Application
app	I-Application
was	O
restored	O
to	O
the	O
app	B-Application
store	I-Application
.	O
</s>
<s>
Celebrities	O
who	O
have	O
used	O
Tumblr	B-Application
include	O
Taylor	O
Swift	O
,	O
Lady	O
Gaga	O
,	O
Ariana	O
Grande	O
,	O
Zooey	O
Deschanel	O
,	O
John	O
Mayer	O
,	O
Soulja	O
Boy	O
,	O
Fergie	O
,	O
Zayn	O
,	O
Lana	O
Del	O
Rey	O
,	O
Grimes	O
,	O
Hayley	O
Williams	O
,	O
Frank	O
Ocean	O
,	O
Sufjan	O
Stevens	O
,	O
Jhené	O
Aiko	O
,	O
Amandla	O
Stenberg	O
,	O
Karlie	O
Kloss	O
,	O
Camila	O
Cabello	O
,	O
Neil	O
Gaiman	O
,	O
Lynda	O
Carter	O
,	O
Ryan	O
Reynolds	O
,	O
Diane	O
Duane	O
,	O
Chuck	O
Tingle	O
,	O
Ursula	O
Vernon	O
,	O
and	O
Wil	O
Wheaton	O
.	O
</s>
<s>
On	O
October	O
21	O
,	O
2011	O
,	O
then-U.S.	O
President	O
Barack	O
Obama	O
created	O
a	O
Tumblr	B-Application
.	I-Application
</s>
<s>
The	O
post	O
was	O
later	O
re-posted	O
to	O
Tumblr	B-Application
by	O
another	O
user	O
,	O
and	O
the	O
account	O
from	O
Facebook	O
was	O
traced	O
to	O
a	O
profile	O
on	O
Tumblr	B-Application
due	O
to	O
the	O
profile	O
pictures	O
matching	O
.	O
</s>
