You know what? Classmates.com really sucks. Any service that relies on auto-renewal, without informing its customers that the renewal date is approaching, is sketchy. It's making money because customers are absent-minded (me) or busy (me again), not because customers are satisfied and sign up for another year by choice. Yeah, well, maybe you can get my money once because I didn't keep on top of things, but you'll never get it again.
ETA: Aha--someone else has had it with classmates.com. Imagine how angry he would be if that $15 subscription turned into a $40 subscription over night.