Friends on facebook is meaningless. I dont use facebook, i created account just so i could login to places using facebook connect. i have hundreds of friends, i think its over 300 and under 400, i dont remember. Out of those only 2 people actually know me and know my real name.
I've been using Fb for almost 7 years and all through this time I haven't ever deactivated my account. But I am pretty choosy in adding friends. I have 250 friends in my fb account now.