<s>
Google	B-Application
Panda	I-Application
is	O
a	O
major	O
change	O
to	O
Google	B-Application
's	I-Application
search	O
results	O
ranking	O
algorithm	O
that	O
was	O
first	O
released	O
in	O
February	O
2011	O
.	O
</s>
<s>
Soon	O
after	O
the	O
Panda	O
rollout	O
,	O
many	O
websites	O
,	O
including	O
Google	B-Application
's	I-Application
webmaster	O
forum	O
,	O
became	O
filled	O
with	O
complaints	O
of	O
scrapers/copyright	O
infringers	O
getting	O
better	O
rankings	O
than	O
sites	O
with	O
original	O
content	O
.	O
</s>
<s>
At	O
one	O
point	O
,	O
Google	B-Application
publicly	O
asked	O
for	O
data	O
points	O
to	O
help	O
detect	O
scrapers	B-Application
better	O
.	O
</s>
<s>
In	O
2016	O
,	O
Matt	O
Cutts	O
,	O
Google	B-Application
's	I-Application
head	O
of	O
webspam	O
at	O
the	O
time	O
of	O
the	O
Panda	B-Application
update	I-Application
,	O
commented	O
that	O
"	O
with	O
Panda	O
,	O
Google	B-Application
took	O
a	O
big	O
enough	O
revenue	O
hit	O
via	O
some	O
partners	O
that	O
Google	B-Application
actually	O
needed	O
to	O
disclose	O
Panda	O
as	O
a	O
material	O
impact	O
on	O
an	O
earnings	O
call	O
.	O
</s>
<s>
Google	B-Application
's	I-Application
Panda	O
received	O
several	O
updates	O
after	O
the	O
original	O
rollout	O
in	O
February	O
2011	O
,	O
and	O
their	O
effect	O
went	O
global	O
in	O
April	O
2011	O
.	O
</s>
<s>
To	O
help	O
affected	O
publishers	O
,	O
Google	B-Application
provided	O
an	O
advisory	O
on	O
its	O
blog	O
,	O
thus	O
giving	O
some	O
direction	O
for	O
self-evaluation	O
of	O
a	O
website	O
's	O
quality	O
.	O
</s>
<s>
Google	B-Application
has	O
provided	O
a	O
list	O
of	O
23	O
bullet	O
points	O
on	O
its	O
blog	O
answering	O
the	O
question	O
of	O
"	O
What	O
counts	O
as	O
a	O
high-quality	O
site	O
?	O
"	O
</s>
<s>
that	O
is	O
supposed	O
to	O
help	O
webmasters	O
"	O
step	O
into	O
Google	B-Application
's	I-Application
mindset	O
"	O
.	O
</s>
<s>
It	O
has	O
been	O
incorporated	O
in	O
Google	B-Application
's	I-Application
core	O
algorithm	O
since	O
2015	O
.	O
</s>
<s>
The	O
name	O
"	O
Panda	O
"	O
comes	O
from	O
Google	B-Application
engineer	O
Navneet	O
Panda	O
,	O
who	O
developed	O
the	O
technology	O
that	O
made	O
it	O
possible	O
for	O
Google	B-Application
to	O
create	O
and	O
implement	O
the	O
algorithm	O
.	O
</s>
<s>
The	B-Application
Google	I-Application
Panda	O
patent	O
(	O
patent	O
8,682,892	O
)	O
,	O
filed	O
on	O
September	O
28	O
,	O
2012	O
,	O
was	O
granted	O
on	O
March	O
25	O
,	O
2014	O
.	O
</s>
<s>
The	O
patent	O
states	O
that	O
Google	B-Application
Panda	I-Application
creates	O
a	O
ratio	O
with	O
a	O
site	O
's	O
inbound	O
links	O
and	O
reference	O
queries	O
,	O
search	O
queries	O
for	O
the	O
site	O
's	O
brand	O
.	O
</s>
<s>
Google	B-Application
Panda	I-Application
affected	O
the	O
ranking	O
of	O
an	O
entire	O
site	O
or	O
a	O
specific	O
section	O
,	O
rather	O
than	O
just	O
the	O
individual	O
pages	O
on	O
a	O
site	O
.	O
</s>
<s>
For	O
the	O
first	O
two	O
years	O
,	O
Google	B-Application
Panda	I-Application
's	O
updates	O
were	O
rolled	O
out	O
about	O
once	O
a	O
month	O
,	O
but	O
Google	B-Application
stated	O
in	O
March	O
2013	O
that	O
future	O
updates	O
would	O
be	O
integrated	O
into	O
the	O
algorithm	O
and	O
would	O
therefore	O
be	O
continuous	O
and	O
less	O
noticeable	O
.	O
</s>
<s>
Google	B-Application
released	O
a	O
"	O
slow	O
rollout	O
"	O
of	O
Panda	O
4.2	O
starting	O
on	O
July	O
18	O
,	O
2015	O
.	O
</s>
