This talk is awesome. (Yes, I'm the same person who thought Danah Boyd's paper was a little wishy-washy. But this talk is awesome, because it has a lot of interesting observations and not nearly as many doubtful conclusions. In the Q&A, she does get into some conclusions, and it gets fuzzier again.)
She has no actual evidence for ANY of her 'research.' I'd like to see some real research in this area... until then, everything coming out of her mouth could be BS.