Evil genius smiley face, apparently used exclusively by me (a professed evil genius), used to pictorally punctuate a particularly wicked or diabolical thought or idea expressed in all forms of inter-computer communications (i.e. IM-ing, blogging, emailing, etc.)
Friend, on IM: So, how was work today?
Me, on IM: Some r-tard
customer scraped the entire right side of my car when they pulled in too close.
Friend: Dude! That sucks! What did you do?
Me: I blew a snot-rocket
on their windshield and split
Friend: That's evil.
Me: I know! >8-D