<s>
Dogpile	B-Application
is	O
a	O
metasearch	B-Application
engine	I-Application
for	O
information	O
on	O
the	O
World	O
Wide	O
Web	O
that	O
fetches	O
results	O
from	O
Google	B-Application
,	O
Yahoo	O
!,	O
Yandex	O
,	O
Bing	B-Application
,	O
and	O
other	O
popular	O
search	B-Application
engines	I-Application
,	O
including	O
those	O
from	O
audio	O
and	O
video	O
content	O
providers	O
such	O
as	O
Yahoo	B-Application
!	I-Application
.	O
</s>
<s>
Dogpile	B-Application
began	O
operation	O
in	O
November	O
1996	O
.	O
</s>
<s>
The	O
site	O
was	O
created	O
and	O
developed	O
by	O
Aaron	O
Flin	O
,	O
who	O
was	O
frustrated	O
with	O
the	O
varying	O
results	O
of	O
existing	O
indexes	O
and	O
intending	O
on	O
making	O
Dogpile	B-Application
query	O
multiple	O
indexes	O
for	O
the	O
best	O
search	B-Application
results	I-Application
.	O
</s>
<s>
It	O
originally	O
provided	O
web	B-Application
searches	I-Application
from	O
Yahoo	B-Application
!	I-Application
</s>
<s>
(	O
directory	O
)	O
,	O
Lycos	B-Application
(	O
inc	O
.	O
A2Z	O
directory	O
)	O
,	O
Excite	B-Application
(	O
inc	O
.	O
</s>
<s>
Excite	B-Application
Guide	O
directory	O
)	O
,	O
WebCrawler	B-Application
,	O
Infoseek	O
,	O
AltaVista	O
,	O
HotBot	B-Application
,	O
WhatUseek	O
(	O
directory	O
)	O
,	O
and	O
World	B-Application
Wide	I-Application
Web	I-Application
Worm	I-Application
.	O
</s>
<s>
It	O
naturally	O
drew	O
comparisons	O
with	O
MetaCrawler	B-Application
,	O
a	O
multi-threaded	O
search	B-Application
engine	I-Application
that	O
had	O
existed	O
before	O
,	O
but	O
Dogpile	B-Application
was	O
more	O
advanced	O
,	O
and	O
it	O
could	O
also	O
search	O
Usenet	B-Application
(	O
from	O
sources	O
including	O
DejaNews	B-Application
)	O
and	O
FTP	B-Protocol
(	O
via	O
Filez	O
and	O
other	O
indexes	O
)	O
.	O
</s>
<s>
In	O
August	O
1999	O
,	O
Dogpile	B-Application
was	O
acquired	O
by	O
Go2net	O
,	O
who	O
were	O
already	O
operating	O
MetaCrawler	B-Application
.	O
</s>
<s>
Dogpile	B-Application
received	O
a	O
design	O
facelift	O
for	O
the	O
first	O
time	O
in	O
December	O
2000	O
.	O
</s>
<s>
The	O
Dogpile	B-Application
search	B-Application
engine	I-Application
earned	O
the	O
J.D.	O
</s>
<s>
Power	O
and	O
Associates	O
award	O
for	O
best	O
Residential	O
Online	O
Search	B-Application
Engine	I-Application
Service	O
in	O
both	O
2006	O
and	O
2007	O
.	O
</s>
<s>
In	O
August	O
2008	O
,	O
Dogpile	B-Application
and	O
Petfinder	O
agreed	O
to	O
a	O
search	O
partnership	O
.	O
</s>
<s>
In	O
November	O
2008	O
,	O
Dogpile	B-Application
launched	O
its	O
"	O
Search	O
and	O
Rescue	O
"	O
program	O
,	O
which	O
donates	O
money	O
to	O
animal-related	O
charities	O
.	O
</s>
<s>
By	O
early-December	O
2008	O
,	O
people	O
using	O
the	O
Dogpile	B-Application
search	B-Application
engine	I-Application
had	O
raised	O
$	O
100,000	O
for	O
Dogpile	B-Application
's	O
Search	O
and	O
Rescue	O
program	O
.	O
</s>
<s>
In	O
July	O
2016	O
,	O
InfoSpace	O
was	O
sold	O
by	O
its	O
parent	O
company	O
Blucora	O
to	O
OpenMail	O
for	O
$45	O
million	O
in	O
cash	O
,	O
putting	O
Dogpile	B-Application
under	O
the	O
ownership	O
of	O
OpenMail	O
.	O
</s>
<s>
In	O
April	O
2005	O
,	O
Dogpile	B-Application
collaborated	O
with	O
researchers	O
from	O
University	O
of	O
Pittsburgh	O
and	O
Pennsylvania	O
State	O
University	O
to	O
measure	O
the	O
overlap	O
and	O
ranking	O
differences	O
of	O
leading	O
Web	B-Application
search	I-Application
engines	I-Application
in	O
order	O
to	O
gauge	O
the	O
benefits	O
of	O
using	O
a	O
metasearch	B-Application
engine	I-Application
to	O
search	B-Application
the	I-Application
web	I-Application
.	O
</s>
<s>
Results	O
found	O
that	O
from	O
10,316	O
random	O
user-defined	O
queries	O
from	O
Google	B-Application
,	O
Yahoo	O
!,	O
and	O
Ask	B-Application
Jeeves	I-Application
only	O
3.2	O
percent	O
of	O
first	O
page	O
search	B-Application
results	I-Application
were	O
the	O
same	O
across	O
those	O
search	B-Application
engines	I-Application
for	O
a	O
given	O
query	O
.	O
</s>
<s>
Another	O
study	O
later	O
that	O
year	O
using	O
12,570	O
random	O
user-defined	O
queries	O
from	O
Google	B-Application
,	O
Yahoo	O
!,	O
MSN	B-Application
Search	I-Application
,	O
and	O
Ask	B-Application
Jeeves	I-Application
found	O
that	O
only	O
1.1	O
percent	O
of	O
first	O
page	O
search	B-Application
results	I-Application
were	O
the	O
same	O
across	O
those	O
search	B-Application
engines	I-Application
for	O
a	O
given	O
query	O
.	O
</s>
<s>
These	O
studies	O
showed	O
that	O
each	O
search	B-Application
engine	I-Application
provides	O
vastly	O
different	O
results	O
.	O
</s>
<s>
While	O
users	O
of	O
the	O
search	B-Application
engine	I-Application
may	O
not	O
recognize	O
a	O
problem	O
,	O
it	O
was	O
shown	O
that	O
they	O
use	O
~	O
3	O
search	B-Application
engines	I-Application
per	O
month	O
.	O
</s>
<s>
Dogpile	B-Application
realized	O
that	O
searchers	O
are	O
not	O
necessarily	O
finding	O
results	O
they	O
were	O
looking	O
for	O
in	O
one	O
search	B-Application
engine	I-Application
and	O
thus	O
decided	O
to	O
redefine	O
their	O
existing	O
metasearch	B-Application
engine	I-Application
to	O
provide	O
the	O
best	O
results	O
.	O
</s>
<s>
Dogpile	B-Application
lists	O
following	O
features	O
:	O
</s>
<s>
Web	B-Application
Search	I-Application
Box	O
:	O
The	O
area	O
where	O
users	O
enter	O
the	O
search	O
term	O
.	O
</s>
<s>
About	O
Results	O
:	O
Find	O
out	O
about	O
Dogpile	B-Application
's	O
policies	O
regarding	O
sponsored	O
and	O
non-sponsored	O
search	B-Application
results	I-Application
.	O
</s>
