I found this on Digg today, Mike Reed is right on the money with his representation of the different types of people who haunt the message boards, and funny too.
Atheist is Deacon's cyber-doppelganger. Deacon and Atheist hold equally fervent, though diametrically opposed beliefs about religion, and both feel compelled to share those beliefs at every possible opportunity. Should an unsuspecting forum member make even a passing comment about faith or spirituality of any flavor, Atheist will descend like one of the Furies, mercilessly hectoring all of the ignorant and delusional believers about the sordid history of the church and the pernicious effects of religion on society. After a few of Atheist’s anti-religious jeremiads most other Warriors will avoid the subject altogether, though Evil Clown may egg him on a little, and Philosopher may amuse himself by pointing out flaws in his reasoning. If a forum has the misfortune of having both Deacon and Atheist as members, the bickering often continues until Nanny or Admin pulls the plug. Bliss Ninny can also sometimes squelch the conversation by saying, “Well, everyone has a right to their [sic] opinion.”
Of course, one of my friends fits the Philosopher description quite well. You know who you are.