From Rick Bruner is this reference to a survey about blog readers. Rick’s summary analysis of the data:
Average age: 39
Percent of all respondents who are male: 79%
Average household income: $98,000
Average number of blogs respondents read daily: 8
Percent of blog readers who do NOT write blogs: 79%
Percent who have clicked on an ad on a blog: 67%
Read the entire survey results [scroll down] for your own evaluation.

Who Reads BlogsTrackBack from Business Opportunities Weblog: