Founder, TechCrunchRank: 22Why he matters: In tech circles, it's become a verb, as in "We got TechCrunched." Everyone knows what it means: Your phone starts ringing, and traffic to your website explodes.
Since Arrington launched TechCrunch two years ago, the site has become a must-read in the fast-growing Web 2.0 world. When Arrington reviews a company's product -- typically before others get word of it -- VCs often begin pitching the startup with funding offers. Arrington says he plans to stay independent, and why shouldn't he, given that his 10-person outfit brings in $200,000 a month. Look for him to begin buying up other blogs as he seeks to expand his reach as Silicon Valley's reigning kingmaker.
Meet 50 Who Matter winner Gina Bianchini. Her site, Ning, lets anyone be a social networking mogul. (more) 
