Paul Pival notes a survey of Blogs in Academic Libraries being conducted by Shelly Drum. I look forward to seeing the results of the survey when it's complete.

If your library runs an outward-facing blog, take a few minutes (and that's all it took me) to fill out the survey: http://www.surveymonkey.com/s.asp?u=773202839763. If you aren't running a public-facing library blog and want to see the responses to date, simply click "Exit this survey" from the first page, without entering any data.