<s>
Go	B-Protocol
!	I-Protocol
Messenger	I-Protocol
was	O
a	O
free	O
Instant	B-Application
Messenger	I-Application
program	O
for	O
the	O
PlayStation	B-Operating_System
Portable	I-Operating_System
.	O
</s>
<s>
It	O
was	O
introduced	O
to	O
the	O
system	O
with	O
the	O
3.90	O
firmware	O
update	O
and	O
the	O
Go	B-Protocol
!	I-Protocol
Messenger	I-Protocol
icon	O
was	O
added	O
under	O
Network	O
.	O
</s>
<s>
PSP	B-Operating_System
users	O
could	O
communicate	O
with	O
PC	O
users	O
through	O
Go	B-Protocol
!	I-Protocol
Messenger	I-Protocol
if	O
the	O
PC	O
was	O
running	O
BT	O
Softphone	O
2	O
.	O
</s>
<s>
It	O
allowed	O
the	O
Go	B-Device
!	I-Device
Cam	I-Device
to	O
be	O
used	O
for	O
video	B-Application
conferencing	I-Application
and	O
voice	B-Protocol
chat	I-Protocol
.	O
</s>
<s>
When	O
the	O
service	O
was	O
functional	O
,	O
Go	B-Protocol
!	I-Protocol
Messenger	I-Protocol
allowed	O
users	O
to	O
:	O
</s>
<s>
Subsequently	O
,	O
the	O
5.50	B-Operating_System
firmware	I-Operating_System
update	O
removes	O
the	O
Go	B-Protocol
!	I-Protocol
Messenger	I-Protocol
icon	O
from	O
the	O
Network	O
group	O
.	O
</s>
