Well, sort of. The sample size is quite small and it’s early days for this kind of study, but this article in the Economist is worth a read. The teens and twenty-somethings in the study all reported more negative feelings after they’d spent time on Facebook versus spending time with people in real life. I’m not sure that this is much of a surprise – especially for that age-group for whom it looks like everyone else is much cooler and having a much better time than you are. As you grow older, I think you probably grow out of that so I wonder what a similar study would reveal about older age-groups. Anyway, expect to see more of this sort of thing as the web matures.