MySpace is about teenage rebellion; ugliness and defiantly folded arms. Facebook is much more popular among those of college age and older - it's more grown up, and looking at it isn't like pouring acid into your eyeballs.

So it's timely that Danah Boyd, one of the most incisive researchers looking at societies on the web, has come up with a paper on the class structures of Facebook and MySpace. In essence, she says good middle class kids use Facebook, while the working classes use MySpace. In many respects it is one of those things that puts what you already know into context, but it's a worthwhile read.

But aside from all of the boggle-eyed social butterflies who spend hours each day updating their profile and the hand-rubbing money men (including those who enjoy stating the obvious) the real interest for me lies in who uses it, and why.