Steve Chen, left, and Chad Hurley.
AGE: 30 and 28, respectively
OCCUPATION: YouTube founders
NUMBER OF TIME COVERS: 0
PREVIOUS APPEARANCES ON THE TIME 100: 1
PRO: Since their buyout by Google in 2006, the duo's video-sharing company has been steadily increasing traffic and influence, especially for presidential candidates. In addition to hosting a debate with CNN, the site has been a repository for politicians to toot their own horns — and tear down opponents.
CON: That pesky problem of copyrighted-video uploads persists, proving old media can still cause plenty of trouble for new media. And access to YouTube is increasingly being blocked in tightly controlled countries (read China).