That's strange. I created a fake account some years ago, to contact some old friends whose email I had lost. I used the account for almost one week. To this day I still get a facebook email every 4-5 days. If nobody invites me to a group (!?) or posts new photos in their gallery, then it's facebook itself who wants to remind me that it's been a long time since the last time I logged in, and my friends are waiting to hear from me!

weirdly, I get weekly updates from them even though I'm not on it, because someone signed me onto a corporate account. I get the constant linkedin "you might know Joe" emails too, so I though that was a reasonable assumption.

BTW @ the guy who called me a sociopath: Not all relationships are black and white. There's such a thing as being polite to someone at parties and still not wanting to know every detail of their life.