One possibility of the blog as a research method might perhaps be that it aids in the creation of what I have called elsewhere 'differential publications'. In my own thesis, which made use of a research blog as part of its practical methodology, I used a blog to specifically highlight the processual and collaborative nature of research. A blog allowed me to do this better than traditional print-based (or email-based) forms of communication could in that respect. Yet, it also remains rather limited in what it can do as a medium, and blogs still tend to have a strong authorial voice, and remain limited in their collaborative and multimodal possibilities. Also see: http://www.openreflections.org/?page_id=45

The research blog or blogging as a research method is an intriguing question indeed. But what makes a blog, or better said, the specific usage of a blog into a suitable scholarly 'method' -- for you and/or for others? A blog in itself is a medium/a publishing platform. A method then is a certain approach to a blog, how you implement it into research strategies. If you make the case for (a specific use of) a blog, what makes it a potentially more useful research method (for you and others) than, for example, methods based on the usage of other (print-based) media?