As anyone who spends time in online forums can testify, a collection of personalities can be easily identified from their posting behaviour. Through extensive research ;), afterglow.ie designer has put together a small selection of the freaks, geeks that inhabit the far reaches of the Interweb.
Sadly, as with everything in life, the level headed types aren't half as interesting so are not included in the set

Icons Included:
Lurker, Pinko Commie, Bush Baby, Troll, Moderator, Hopelessly Addicted, Clueless, The Joker, The Statistician, Guru, Mac Zealot, PC Weenie

Download: Windows and Mac OS

Source: http://www.afterglow.ie/icons.html