<s>
500px	B-Algorithm
(	O
pronounced	O
"	O
five	O
hundred	O
px	O
"	O
)	O
is	O
a	O
global	O
online	O
photo-sharing	O
platform	O
that	O
is	O
a	O
subsidiary	O
of	O
Visual	O
China	O
Group	O
.	O
</s>
<s>
It	O
is	O
based	O
in	O
Toronto	O
,	O
Ontario	B-Architecture
,	O
Canada	O
.	O
</s>
<s>
Evgeny	O
Tchebotarev	O
started	O
500px	B-Algorithm
in	O
2003	O
on	O
the	O
social	O
blogging	O
website	O
LiveJournal	B-Application
as	O
a	O
hobby	O
,	O
while	O
he	O
completed	O
a	O
business	O
degree	O
at	O
Ryerson	O
University	O
(	O
now	O
Toronto	O
Metropolitan	O
University	O
)	O
.	O
</s>
<s>
Tchebotarev	O
joined	O
forces	O
with	O
Oleg	O
Gutsol	O
and	O
in	O
early	O
2009	O
,	O
they	O
began	O
work	O
on	O
the	O
mostly	O
automated	O
incarnation	O
of	O
500px	B-Algorithm
.	O
</s>
<s>
500px	B-Algorithm
's	O
blog	O
was	O
named	O
one	O
of	O
the	O
best	O
blogs	O
of	O
2012	O
,	O
by	O
Time	O
magazine	O
.	O
</s>
<s>
In	O
November	O
2016	O
,	O
the	O
company	O
launched	O
500px	B-Algorithm
Studio	O
,	O
which	O
allows	O
brands	O
to	O
access	O
custom	O
and	O
on-demand	O
photography	O
from	O
500px	B-Algorithm
's	O
photographers	O
after	O
their	O
launch	O
of	O
a	O
global	O
photographer	O
directory	O
.	O
</s>
<s>
In	O
August	O
2017	O
,	O
500px	B-Algorithm
announced	O
support	O
for	O
wide-gamut	O
images	O
.	O
</s>
<s>
In	O
November	O
2017	O
,	O
500px	B-Algorithm
was	O
the	O
recipient	O
of	O
the	O
Deloitte	O
Technology	O
Fast	O
50	O
award	O
,	O
which	O
recognizes	O
Canadian	O
companies	O
for	O
their	O
innovation	O
,	O
rapid	O
revenue	O
growth	O
,	O
and	O
entrepreneurial	O
spirit	O
.	O
</s>
<s>
On	O
February	O
26	O
,	O
2018	O
,	O
500px	B-Algorithm
was	O
acquired	O
by	O
Visual	O
China	O
Group	O
.	O
</s>
<s>
On	O
July	O
1	O
,	O
2018	O
,	O
Getty	O
Images	O
became	O
500px	B-Algorithm
's	O
exclusive	O
distribution	O
partner	O
for	O
licensing	O
outside	O
China	O
,	O
as	O
per	O
its	O
existing	O
agreements	O
with	O
VCG	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
500px	B-Algorithm
Marketplace	O
was	O
shut	O
down	O
on	O
June	O
30	O
,	O
2018	O
.	O
</s>
<s>
500px	B-Algorithm
reported	O
the	O
breach	O
in	O
February	O
2019	O
.	O
</s>
<s>
500px	B-Algorithm
has	O
an	O
algorithm	O
in	O
place	O
to	O
evaluate	O
recently	O
uploaded	O
photos	O
that	O
takes	O
views	O
,	O
likes	O
and	O
comments	O
into	O
account	O
and	O
results	O
in	O
a	O
photo	O
's	O
rating	O
or	O
'	O
Pulse	O
 '	O
.	O
</s>
<s>
Apps	O
for	O
iPhone	B-Device
,	O
iPad	B-Device
,	O
Android	B-Application
,	O
were	O
also	O
made	O
for	O
the	O
site	O
.	O
</s>
<s>
Versions	O
for	O
Windows	O
Phone	O
8	O
and	O
Windows	B-Application
8	I-Application
were	O
shut	O
down	O
by	O
the	O
end	O
of	O
April	O
2015	O
.	O
</s>
<s>
On	O
April	O
12	O
,	O
2012	O
,	O
500px	B-Algorithm
's	O
Terms	O
of	O
Service	O
rose	O
to	O
the	O
top	O
of	O
popular	O
site	O
Hacker	B-Application
News	I-Application
,	O
garnering	O
attention	O
for	O
legalese	O
on	O
the	O
left-hand	O
side	O
of	O
the	O
page	O
and	O
summing	O
up	O
the	O
legalese	O
into	O
basic	O
points	O
on	O
the	O
right-hand	O
side	O
.	O
</s>
<s>
The	O
resulting	O
discussion	O
on	O
the	O
Terms	O
was	O
mixed	O
,	O
with	O
positive	O
feedback	O
such	O
as	O
'	O
awesome	O
 '	O
and	O
'	O
one	O
of	O
the	O
cleanest	O
in	O
the	O
industry	O
 '	O
alongside	O
negative	O
feedback	O
that	O
believes	O
500px	B-Algorithm
may	O
have	O
put	O
themselves	O
at	O
undue	O
risk	O
.	O
</s>
<s>
On	O
January	O
21	O
,	O
2013	O
,	O
Apple	O
removed	O
500px	B-Algorithm
's	O
iPad	B-Device
app	O
from	O
its	O
store	O
,	O
citing	O
concerns	O
of	O
nudity	O
available	O
via	O
the	O
app	O
.	O
</s>
