Pumacy Technologies AG are doing a study of Knowledge Management Blogs. It's not completely clear what all they are doing. This particular report provides a ranking of 50+ blogs in the KM arena for the month of August 2008.
Interesting to see the combination of activity and Google PageRank / Alexa ranking. There are some blogs in the top rankings with little activity in August. This blog comes in an number 11 in the list.
In an explorative study about Knowledge Management weblogs Pumacy Technologies AG has been analysing active KM-blogs by comparing figures from August 2008.
Thanks to Boris Jaeger for letting me know.