Brady Forrest caught Bill Tancer’s presentation at the O’Reilly Radar Executive Briefing yesterday, where he revealed his picks for the next four up and coming Web 2.0 sites. Bill works for Hitwise, a research firm that is able to measure the web activity of millions of internet users.

You can review Bill’s predictions on Brady’s O’Reilly Radar post: http://radar.oreilly.com/archives/2007/03/etech_hitwise_s.html