I'm pretty confident that danah boyd's was the most talked about talk during the Personal Democracy Forum 2009 Conference in New York City. I can say this because she was mentioned more than 750 times in the twitter stream during the 2 days of the conference. Michael Wesch got a lot of buzz - almost 600 mentions - and Jeff Jarvis and Mark Pesce (who gave a really powerful talk last year too) did well, each getting almost 500 mentions. But boyd topped them all.