I may not be as hot as Ezra Klein, but I’m really smart:
Whatever their provenance, the public intellectuals of 2009 will want to be fluent in the obvious issues of the moment: environment and energy, market turmoil, China, Russia, Islam. On that basis it looks like another good year for established stars such as Thomas Friedman, Martin Wolf, Bjorn Lomborg and Minxin Pei. But a rising generation of bloggers is terrifyingly young and bright: expect to hear more from Ezra Klein, Megan McArdle, Will Wilkinson and Matthew Yglesias.
I think it would be strange if the main qualification for becoming a high-profile public intellectual in the future is that you had to start a personal blog in 2002 or 2003.