<s>
ImaHima	B-Application
was	O
a	O
mobile	O
location-based	O
social-networking	O
service	O
created	O
in	O
1999	O
and	O
shut	O
down	O
in	O
2006	O
.	O
</s>
<s>
Initially	O
ImaHima	B-Application
started	O
out	O
as	O
an	O
"	O
unofficial	O
"	O
service	O
but	O
was	O
later	O
accepted	O
inside	O
the	O
walled	O
garden	O
of	O
the	O
Japanese	O
mobile	O
carriers	O
(	O
NTT	O
DoCoMo	O
,	O
KDDI	O
,	O
Softbank	O
)	O
.	O
</s>
<s>
At	O
its	O
peak	O
,	O
ImaHima	B-Application
had	O
over	O
500,000	O
users	O
in	O
Japan	O
and	O
was	O
also	O
made	O
available	O
in	O
Switzerland	O
and	O
Australia	O
.	O
</s>
<s>
The	O
fundamental	O
patents	O
for	O
mobile	O
checkin	O
,	O
status	B-Application
updates	I-Application
and	O
location-based	O
advertising	O
pioneered	O
by	O
ImaHima	B-Application
were	O
acquired	O
by	O
Facebook	O
in	O
2013	O
.	O
</s>
