I LOVED facebook in college, the most I ever had was like 495 frineds, but unlike when I had myspace it was people I know from grammar school friending me and shit after I got all my high school frineds and college friends it was pretty awesome.
Although after awhile it kinna became a contest to see who could get more people on their (I bet it still is) - and pretty much anyone who you had like a brief interaction with freinds you on that thing - I remember waking up from a party and having like 4 friends requests weekly from people I met drunk. oh well.
It was addicting, to be honest, I'd go to the computer lab to type a paper and fuck around with facebook all night. Very cool when it was college only.
but I deleted my myspace/facebook when I started to slug off in grades, like Cajole I'll reactive it randomly to read my ex-girlfriends page ;p, then delete it real quick before she can delete me :\