The BBC reports on research by Danah Boyd which found that Facebook users come from wealthier homes and are more likely to attend college while MySpace users tend not to have gone on to further education. While “class” in the US does not map directly to income it is more about social life and networks. Hence Facebook users tend to be white and education oriented while MySpace teenager tend to come from families from immigrant backgrounds.
This rings true in my view, and maps to my view that in the future the really powerful networks will be closed ones. You can’t get to a Facebook profile unless you are registered and it’s not open to the Web. On MySpace anyone – logged in or not – can reach you, and it also reflects a teenager’s general “posture” to the outside world much more because of its public nature.