I am conflicted in my feelings about it. To remain in touch with some of the people I care about, it appears that I need to have it. It's also nice sometimes to have a way for some acquaintances to get ahold of me or me them, or to find certain contact people. It's been a good way to stay in touch with friends whose address changes frequently, have contact info stored in one place, and also to keep in touch with ex-students. I like the chat feature it has as well.
What's your opinion on it?