Bora Zivkovic has what is basically a short history of science blogging up. I was one of those who was there at the beginning, and I honestly can’t say that he left anything of great relevance out of the narrative. In normal circumstances I don’t think much about what I do, I do. But one thing I will add: blogging isn’t some exotic and peculiar aspect of science anymore, many labs use WordPress as a content management system. Blogs as they were 10 years ago aimed out, toward the populace. Today the info-ecological niches what we would have called blogs fill are much more diverse. Some blogs basically exist to update lab members and interested researchers on their publications and journal club. I add these to my RSS even though I’m not a member of the lab and don’t participate in the journal club because they’re educational to me (e.g., gc bias). Imagine, if you will, that R. A. Fisher had had a blog at Rothamsted. Though this is an opportunity to point you to the R.A. Fisher Digital Archive in case you don’t know about it. We live in rich times for the infovore.
Oh, and in the interests of social media whoring: