Thank you, guys! I got up this morning and found 200 more people I was following. I have revoked every ap, changed my password, and am manually deleting all these 13-19 y.o. Brazilian vampires, satanists, models, actors, radio stations and DJs that I somehow got wrapped into, but I still have no idea how I got wrapped into them!
The only thing I can think of is that I recently reviewed SocialOomph for an article I wrote, which was mentioned on the link Matt Phillips provided, but it wasn't in my list of aps to revoke. Shrug?