Are Facebook friends real friends?

Since joining Facebook a few weeks ago, I have managed to gain 67 friends and counting... this without really trying. Some make fun of me when I announce I made 5 friends today. So this comic was especially prescient:

(If you can't read it, it says, "Nevin invited all 3958 of his myspace friends to help him move" Yet Nevin is obviously moving all his stuff by himself.)