Facebook Friends

A small question about Facebook
I think the last time i checked, i saw this:
Welcome, Joey. You have 30 friend requests and 109 other requests.
You have 252 friends.

The questions, how many of all those people do i actually know?
I would say i have deleted over 300+ in the past month
Since i have no idea who most of them are?

I prefer to keep to my blog, since i don’t really care who i have to “connect” with
It’s easier, since if anyone wants me to link to them, they can ask via my shoutbox

So the question: How many of your facebook/frienster friends do you ACTUALLY know?