<s>
Bing	B-Application
xRank	I-Application
(	O
previously	O
Live	B-Application
Search	I-Application
xRank	I-Application
)	O
was	O
a	O
search	B-Application
service	I-Application
as	O
part	O
of	O
Microsoft	O
's	O
Bing	B-Application
search	I-Application
engine	I-Application
.	O
</s>
<s>
It	O
kept	O
track	O
of	O
notable	O
celebrities	O
,	O
musicians	O
,	O
politicians	O
,	O
and	O
bloggers	O
and	O
ranked	O
them	O
in	O
order	O
of	O
popularity	O
from	O
Bing	B-Application
search	I-Application
query	O
results	O
.	O
</s>
<s>
As	O
of	O
October	O
2010	O
,	O
Bing	B-Application
xRank	I-Application
has	O
been	O
shut	O
down	O
.	O
</s>
