I'm with numbah; since when is Satanism a division of Christianity? Yes, Satan is a Christian belief; but most Satanist don't even believe that Satan is real. The name came about, because they saw themselves as opposites of the Church; what's more anti-Christian than Satan? Most of these people are into self-worship, rather than that of a higher entity. I'm not speaking for all of them, as there are true Satan worshippers out there, but the original point of creation of this group wasn't to actually worship him.

I don't think Satanism is Christian, is it?