Two women with whom I grew up were practicing Satanists the last time I spoke with them. One has since moved to New Orleans, and I've lost track of the other.
When I was a freshman, one fraternity (which shall remain unnamed) pledged a couple guys who were into Satanism, and after a couple years, the whole house was pretty whacked out. These guys wore "devil's rings" and tatoos and were generally not the type of guy you bring home to meet your parents!
I've seen what the black arts can do, and avoid any situation pertaining to them. Frankly, I thought twice about even posting this!