<s>
Sproose	B-Application
was	O
a	O
consumer	O
search	B-Application
engine	I-Application
launched	O
in	O
August	O
2007	O
by	O
founder	O
Bob	O
Pack	O
.	O
</s>
<s>
Sproose	B-Application
provided	O
web	B-Application
search	I-Application
results	O
from	O
partners	O
including	O
MSN	B-Protocol
,	O
Yahoo	B-Application
!	I-Application
</s>
<s>
and	O
Ask.com	B-Application
.	O
</s>
<s>
Sproose	B-Application
intended	O
to	O
have	O
better-quality	O
results	O
than	O
algorithmic	O
search	B-Application
engines	I-Application
because	O
its	O
users	O
were	O
able	O
to	O
influence	O
the	O
ranking	O
order	O
of	O
the	O
search	B-Application
results	I-Application
by	O
voting	O
for	O
websites	O
(	O
which	O
moved	O
them	O
up	O
in	O
the	O
order	O
of	O
search	B-Application
results	I-Application
)	O
and	O
deleting	O
bad	O
or	O
spam	O
results	O
.	O
</s>
<s>
It	O
had	O
been	O
compared	O
to	O
Digg	B-Application
and	O
Mahalo.com,	O
among	O
other	O
social	O
search	B-Application
websites	I-Application
.	O
</s>
<s>
The	O
domain	O
sproose.com	B-Application
is	O
now	O
owned	O
by	O
a	O
British	O
artist	O
.	O
</s>
<s>
Registration	O
was	O
not	O
required	O
to	O
search	O
on	O
Sproose	B-Application
.	O
</s>
<s>
When	O
a	O
user	O
registered	O
with	O
Sproose	B-Application
,	O
a	O
personal	O
profile	O
page	O
was	O
created	O
.	O
</s>
<s>
In	O
January	O
2009	O
,	O
Sproose	B-Application
launched	O
a	O
recommendation	O
engine	O
and	O
voting	O
platform	O
.	O
</s>
<s>
Sproose	B-Application
was	O
privately	O
held	O
.	O
</s>
