No. 9 Chad Hurley and Steven Chen, co-founders, YouTube
Last year's position: Not placed
Why? Popularising user-generated content
Friends Chad Hurley and Steven Chen hit the sweetest of dot-com sweet spots when they founded YouTube.com in early 2005, initially as a way for friends to share their videos with one another.
It proved an immediate success with web surfers worldwide and is now the 13th most popular site on the internet.
Now the talk is about how YouTube - perhaps the most visible example of user-generated content - will revolutionise all broadcast media. Already big media players who were once cursing YouTube are realising they need to find a way to play along with the upstart website.
The question now is how YouTube will make money but there's no doubt Hurley and Chen - along with a third founder Jawed Karim who has since left the company - got the ball rolling on a new content model that will have influence for years to come.
Take a walk down memory lane - and find out who made the Agenda Setters poll over the years:
"Ray Ozzie is a radical change force for Microsoft. He is moving them in a very different direction."
--Richard Sykes, Agenda Setters panellist
"My observation is that [kids today] are far more networked and open than any other generation we have ever seen."
--Peter Cochrane, Agenda Setters panellist
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Smart 50 - Asia's best users of IT ZDNet Asia
Chron 500 - The San Francisco Bay Area's top public companies San Francisco Chronicle
The 50 people who matter now Business 2.0
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