Think the people who while away their hours reading and commenting on political blogs are slovenly twenty-somethings with nothing better to do?

Think again, said a survey last week by Blogads, a company that many leading political blogs have used for ad placements.

In an unscientific Web survey of 36,000 people, Blogads reported that political blog readers tend to be age 41 to 50, male (72 percent), and earn $60,000 to $90,000 per year. Two in five have college degrees, while just a tad less have graduate degrees.

"These are not people who are politically idealistic and born yesterday," said Markos Moulitsas Zuniga, who runs the popular liberal site DailyKos.

"I think people want to dismiss blog readers as unemployed people in their basement. Apparently not," said Glenn Reynolds of the conservative blog InstaPundit.