I use these:

:)  :D  :P  ^^  =)  :/  ;)   in almost all of my conversations 'cause I don't know any others :P

I always use emoticons :D It has become a habit! My favourite right now are ^~^ C: XD :DD :)) :') :] D: o_o -_- there are so many! 

Hehe this post makes me smile! I know how to write many emoticons but my two most commonly used ones are: :) and ^_^.

I prefer the ones that convey a feeling of happiness :D.

@%^#@^$&%*(^(&)(&*)_*_*_*   = You get dizzy  )))

I use =w= --> annoyed face

:3 ----> cute face, looks like a kitty, doesn't it? 

;D ---> when i'm talking about something so evil hehe

>.> <.< ---> *looks around* 

._. ----> this is "feeling stupid" face xDD

xD or XD ----> super happy face

=_= ----> "I'm not happy" face

and much more :) can't remember them all.