Via smart mobs, this news:

Cities identified as "cool" or creative by Richard Florida have more bloggers, according to Rob Goodspeed's analysis. These cities also have robust local online communities like Craigslist and Upcoming

Not really suprising but it's nice to read a study about it (here is the pdf).

In fact, the top 10 cities with the most bloggers included the top 8 from Florida’s list of centers of the creative class. My theory: cities with the richest local online culture (measured in number of blogs, and use of a select group of other geographically-bound websites) will reflect those cities with the highest numbers of creative class people. In short, the cities with the most blogs will be the most economically successful in the future.