Although this stackexchange seems to be a little hostile towards metrics (especially when they are about research productivity), it is still sometimes fun to indulge in a little bit of arbitrary measurement and quantification. Sometimes it can help you set targets, or let you know what is possible. In this case I am curious about blogs.
Having a web-presence is important, but how do you know if your academic blog is doing a good job?
From my own experience, I have noticed that my blog gets a lot more readership and mention than any of my papers. I usually find this encouraging, and at times it helps me increase productivity by incorporating blogging into my research work-flow and feeling like I am able to communicate with people before having complete results. Sometimes even receive feedback (although my blog is not at the level of regular commentators, and nowhere close to the comment activity I see on popular blogs that I follow).
However, getting more mention than my papers is not a fair standard. In fact, I have no standard by which to decide if I am doing an alright job blogging, and what I should aim for to improve the ability of my blog to engage other researchers or interested readers. Having some hard data is also useful for converting people new to blogging to the online community.
Are there any statistics on typical readership, posting rates, and commenting frequency for small (non-superstar) academic blogs? I would be especially interested in statistics that are broken down by area, since I expect a nutrition or cancer blog to inherently get more readership than one dedicated to Stone-duality. Of particular interest to me would be information about blogs in theoretical computer science and/or mathematical modeling.