As for metrics by blog type: I’ve done that in Chapter 9 of The Liblog Landscape 2007-2008, which continues to be available as a PDF or book, for every subgroup with at least 10 members. (Losing yet another sale opportunity, I’m probably obliged to note that the breakdowns are also in Cites & Insights 9:7.)

For the new study, I’ve given up trying to identify blogs by subgroup; it felt too questionable. So such metrics won’t be feasible…although, once a set of blogs is identified, it’s probably no more than an hour’s work to do comparative metrics.

But what I’m *really* interested in, and what I suspect would be too much work to consider, would be how metrics vary by blog type (medical librarians vs. librarian blogs as a whole, and so on for other segments.). Maybe do that as one-offs, with funding via PayPal or Fundable?