Blogads: reader survey for blog advertising.

http://www.blogads.com/survey/blog_reader_survey.html

Thanks to the 17,159 blog readers who responded to our survey! This survey shows that blog readers are older and more affluent than most optimistic guestimates: 61% of blog readers responding to the survey are over 30, and 75% make more than $45,000 a year. Moreover, blog readers are more cyber-active than I'd hoped: 54% of their news consumption is online. 21% are themselves bloggers and 46% describe themselves as opinion makers

Just a bookmark for myself so I'll go read this article sometime.