I recall someone inviting me to some sort of social site, and I accepted. I didn't quite see the point of it. In fact, I became a member because I accepted an invitation to follow someone else. MULTIPLY! Yeah, that's what it was called. Somehow or other, you got sucked in and got onto the page I had unintentionally created. I have the feeling you didn't see the point to the whole thing, either. I wonder if Multiply is still sitting around out there.
I haven't joined facebook, and don't plan on it. Guess I'm destined to remain friendless.