Markos Moulitsas
AGE: 35
OCCUPATION: Founder and principle author of the blog Daily Kos
NUMBER OF TIME COVERS: 0
PREVIOUS APPEARANCES ON THE TIME 100: 0
PRO: Runs a politically liberal blog, dailykos.com, which receives between 14 and 24 million visits per month, organizes netroots campaigns and an annual convention called YearlyKos.
CON: With the exception of the 2006 elections, Moulitsas is often criticized for endorsing candidates that rarely win elections, raising questions about his site's effectiveness.