160 or so. Only important people as well - I could have 4-5 times as many considering how many people I have known through the years but what's the point if you have no reason to stay in touch anymore. Moreover, it seems like it's more of a social competition than anything as well, I've never looked up someone's profile specifically to see how many friends they have, or upon finding out reacted to positively to a high number. On the contrary I can't help dismiss everyone with 1000+ as some kind of attraction whore (regardless of gender!). You're never going to be able to keep in touch with that many people so the only way that number can matter is pushing your possible like-audience up when you happen to post something likeable.
Family (5): Mom, Sister, Cousin, Cousin, Brother-in-Law
Friends (3): High School Friend, High School Friend, College Friend
Acquaintance (1): Groomsmen at brother-in-law's wedding (I was the Best Man, so we had to communicate on some stuff)
Animal (1): Brother-in-Law's Dog
So, I have 10 Facebook friends, but I have 3 RL friends, haha. I'm a sad person.
I had a little over 400 a while ago, the vast majority of whom I never talk to. I cut that down to 74, most of whom I talk to at least monthly (approx 1/2 family, 1/4 friends from college I still keep in touch with, 1/4 friends from work).
Ironically when I had the huge friend list I was never on Facebook, it was all just random crap from people I didn't talk to. Now I'm on much more.
36, cut down from 100. Didn't want to hear all the bullshit that most people write about, and as you can imagine I didn't even talk with over half of those people. So yeah, I cut down to the 36 people I actually give a shit about.
555! But I only talk to about ~10 of those on a regular basis. (Not really fond of talking to people I don't like a lot). Reason for having about 500 more than I strictly need to, is that I am required to relay a lot of information to a lot of people, I enjoy collecting things (Facebook-friends, empty snus-boxes, Pokémanz, etc), and to find out what's happening in different parts of my, erm, social sphere.