seomoz.org says, it has reviewed and ranked hundreds of web 2.0 sites and awarded the best sites under 41 categories; 3 places (first, second and third) exist per category. Interviews with the founders of some winners have been hosted.
Digg (Social News), LinkedIn (Professional Networking) , del.icio.us (Social Tagging) and Technorati (Blog Guides) are among the winners.
Check out the list:
SEOmoz's Web 2.0 Awards



