Why would you add a person you only met once? I've received invites from such people and because you have NOTHING in common except one event, you never talk to those people

That's why I don't give a smurfette when somebody removes me from fb - because I probably just haven't gotten to it (or I was too idiotic recently, but that's another issue for another day). And when somebody adds me and I realize a few minutes later that we have nothing in common I just remove them

I should crop my friends list to 50. 50 seems okay.