I'm currently gathering data (albeit, informally) for research on how industrial designers use blogs - specifically around learning about design research. I'm also interested in hearing whether anyone has directly used blogs as a design research tool - for example, in place of traditional journals.
I'm collecting input via the Core77 boards and I'm also planning on launching a brief survey to HF section within IDSA. I'll post the findings here, but my the primary purpose behind this is for a presentation on blogs (see p. 9) that I'll be making at the IDSA conference on August 26th.