That is a dumb site - I remember when the whole web was just plastered with their ad's, and just about the time popups went mainstream, classmates kept hitting me with 400x400 windows to meet my classmates. 'I friggin havent gone to high school yet' I tried to say.
Like he would spend more time there than here and like you wouldn't know how to find him without?
I signed up years ago in the services so that no one can request my address, name or phone number (any of those knowing any other of those), or that I could not be used for family tree research, research purposes, advertising etc (by the state registries). So if I would find myself in classmates.com, I would sue them.