<s>
A	O
scraper	B-Application
site	I-Application
is	O
a	O
website	O
that	O
copies	O
content	O
from	O
other	O
websites	O
using	O
web	B-Application
scraping	I-Application
.	O
</s>
<s>
Scraper	B-Application
sites	I-Application
come	O
in	O
various	O
forms	O
.	O
</s>
<s>
Search	B-Application
engines	I-Application
such	O
as	O
Google	B-Application
could	O
be	O
considered	O
a	O
type	O
of	O
scraper	B-Application
site	I-Application
.	O
</s>
<s>
Search	B-Application
engines	I-Application
gather	O
content	O
from	O
other	O
websites	O
,	O
save	O
it	O
in	O
their	O
own	O
databases	O
,	O
index	O
it	O
and	O
present	O
the	O
scraped	O
content	O
to	O
their	O
search	B-Application
engine	I-Application
's	O
own	O
users	O
.	O
</s>
<s>
The	O
majority	O
of	O
content	O
scraped	O
by	O
search	B-Application
engines	I-Application
is	O
copyrighted	O
.	O
</s>
<s>
The	O
scraping	B-General_Concept
technique	O
has	O
been	O
used	O
on	O
various	O
dating	O
websites	O
as	O
well	O
.	O
</s>
<s>
These	O
sites	O
often	O
combine	O
their	O
scraping	B-General_Concept
activities	O
with	O
facial	O
recognition	O
.	O
</s>
<s>
Some	O
scraper	B-Application
sites	I-Application
are	O
created	O
to	O
make	O
money	O
by	O
using	O
advertising	O
programs	O
.	O
</s>
<s>
In	O
such	O
case	O
,	O
they	O
are	O
called	O
Made	B-Application
for	I-Application
AdSense	I-Application
sites	O
or	O
MFA	O
.	O
</s>
<s>
Made	B-Application
for	I-Application
AdSense	I-Application
sites	O
are	O
considered	O
search	B-Application
engine	I-Application
spam	O
that	O
dilute	O
the	O
search	B-Application
results	I-Application
with	O
less-than-satisfactory	O
search	B-Application
results	I-Application
.	O
</s>
<s>
The	O
scraped	O
content	O
is	O
redundant	O
to	O
that	O
which	O
would	O
be	O
shown	O
by	O
the	O
search	B-Application
engine	I-Application
under	O
normal	O
circumstances	O
,	O
had	O
no	O
MFA	O
website	O
been	O
found	O
in	O
the	O
listings	O
.	O
</s>
<s>
Some	O
scraper	B-Application
sites	I-Application
link	O
to	O
other	O
sites	O
in	O
order	O
to	O
improve	O
their	O
search	B-Application
engine	I-Application
ranking	O
through	O
a	O
private	O
blog	O
network	O
.	O
</s>
<s>
Prior	O
to	O
Google	B-Application
's	I-Application
update	O
to	O
its	O
search	O
algorithm	O
known	O
as	O
Panda	B-Application
,	O
a	O
type	O
of	O
scraper	B-Application
site	I-Application
known	O
as	O
an	O
auto	O
blog	O
was	O
quite	O
common	O
among	O
black-hat	O
marketers	O
who	O
used	O
a	O
method	O
known	O
as	O
spamdexing	O
.	O
</s>
<s>
Scraper	B-Application
sites	I-Application
may	O
violate	O
copyright	O
law	O
.	O
</s>
<s>
For	O
instance	O
,	O
the	O
GNU	B-Application
Free	I-Application
Documentation	I-Application
License	I-Application
(	O
GFDL	B-Application
)	O
and	O
Creative	O
Commons	O
ShareAlike	O
(	O
CC-BY-SA	O
)	O
licenses	O
used	O
on	O
Wikipedia	O
require	O
that	O
a	O
republisher	O
of	O
Wikipedia	O
inform	O
its	O
readers	O
of	O
the	O
conditions	O
on	O
these	O
licenses	O
,	O
and	O
give	O
credit	O
to	O
the	O
original	O
author	O
.	O
</s>
<s>
This	O
way	O
they	O
hope	O
to	O
rank	O
highly	O
in	O
the	O
search	B-Application
engine	I-Application
results	O
pages	O
(	O
SERPs	O
)	O
,	O
piggybacking	O
on	O
the	O
original	O
page	O
's	O
page	B-Algorithm
rank	I-Algorithm
.	O
</s>
<s>
Other	O
scraper	B-Application
sites	I-Application
consist	O
of	O
advertisements	O
and	O
paragraphs	O
of	O
words	O
randomly	O
selected	O
from	O
a	O
dictionary	O
.	O
</s>
<s>
Operators	O
of	O
these	O
scraper	B-Application
sites	I-Application
gain	O
financially	O
from	O
these	O
clicks	O
.	O
</s>
<s>
A	O
frequent	O
target	O
victim	O
site	O
might	O
be	O
accused	O
of	O
link-farm	O
participation	O
,	O
due	O
to	O
the	O
artificial	O
pattern	O
of	O
incoming	O
links	O
to	O
a	O
victim	O
website	O
,	O
linked	O
from	O
multiple	O
scraper	B-Application
sites	I-Application
.	O
</s>
<s>
Some	O
programmers	O
who	O
create	O
scraper	B-Application
sites	I-Application
may	O
purchase	O
a	O
recently	O
expired	O
domain	O
name	O
to	O
reuse	O
its	O
SEO	O
power	O
in	O
Google	B-Application
.	I-Application
</s>
