Some general Smileys in the Internet

:) or :-)	Smile
^-^	Delighted; happy face
O:) or O:-)	Smiling angel
:D or :-D	Big, toothy smile
}:> or }:->	Devilish smile
:X or :-X	Lips are sealed
;) or ;-)	Wink
:( or :-(	Frown
:C or :-C	Big frown / Grumpy
:'( or :'-(	Crying
:-/	Sarcasm
:> or :->	Big grin
:p or :-p	Sticking out tongue
:* or :-*	Kiss
:o or :-o	Surprise; outcry
:O or :-O	Scream
:V or :-V	Talking; yakking
8) or 8-)	Smiley with glasses; author wears glasses
|:o	Ooooohhh noooooo!
O_O	Shocked; surprised; bug face
O_o	Confused face
<_<	Disappointed; ashamed; upset face
-_-	Equivalent to latter