The Guide to Akatsuki Cyber Style:

ITACHI:
^/_\^ - Happy
O/_\~ - Wink
>/3\< - Kissy
>/o\< - w00t!
O/o\O - ZOMG
*/_\* - Sharingan
=/_\= - Sleepy
X/_\X - Dead
T/_\T - Sad
@/_\@ - Dizzy
O/_\o - Shifty Eyed
O/_\o" - Sweat Drop
@/A\@ - ORO!?

DEIDARA:
^_\\\ - Happy
~_\\\ - Wink
>3\\\ - Kissy
>o\\\ - w00t
Oo\\\ - ZOMG
=_\\\ - Sleepy
X_\\\ - Dead (-twitch-)
T_\\\ - Sad
@_\\\ - Dizzy
o_\\\ - Shifty Eyed
O_\\\" - Sweat Drop
@A\\\ - ORO!?

ZETSU:
\^^/ - Happy
\O_~/ - Wink
\>3</ - Kissy
\>o</ - w00t
\OoO/ - ZOMG
\=_=/ - Sleepy
\X_X/ - Dead
\T_T/ - Sad
\@_@/ - Dizzy
\O_o/ - Shifty Eyed
\O_o/" - Sweat Drop
\@A@/ - ORO!?

PEIN:
^:_:^ - Happy
O:_:~ - Wink
> < - Kissy
> < - w00t
O O - ZOMG
=:_:= - Sleepy
X:_ - Dead
T:_:T - Sad
@:_:@ - Dizzy
O:_ - Shifty Eyed
O:_" - Sweat Drop
@ @ - ORO!?

KONAN:
@
^_^ - Happy
@
O_~ - Wink
@
>3< - Kissy
@
>o< - w00t
@
OoO - ZOMG
@
=_= - Sleepy
@
X_X - Dead
@
T_T - Sad
@
@_@ - Dizzy
@
O_o - Shifty Eyed
@
O_o" - Sweat Drop
@
@A@ - ORO!?

(i got this idea from looking at 's 'The Guide to Itachi Cyber Style'