Facebook, Twitter users are affluent and urban, study shows
The survey, which studied the top seven social networking sites, showed that Facebook users generally have an "upscale profile." Nielsen also noted that people who are more affluent than the other two-thirds of the population are 25% more likely to use Facebook than those in the the lower third. And conversely, those in the bottom third of the financial chart are 37% more likely to use MySpace than those in the top third
