Facebook is making a bit of noise about the fact that it is now five years old, during which time it has attracted a total of 150 million users (of whom 15 million bother to update their status daily or more often). The statistic which stuck out for me is that the average user now has a total of 120 friends. Facebook originally eschewed the MySpace “whoever has the most friends wins” ethos, but 120 still seems to me a fairly big number (though admittedly my own total is even higher). Where do you find yourself on that scale? Have you befriended every former classmate, or kept yourself to a more restricted group of people you might actually recognise if you passed them in the street?