BlogWalk has really started to crystallise my thoughts on where blogs may fit corporately.
Martin and my discussions on how they fit together with CoP was particularly instructive (especially as Martin has a very valid but somewhat different implementation of CoPs than ours) and Flemming's ideas of Blogs replacing CoP is even more intriguing as I have not made such a large leap.
Certainly the dynamic nature of the linkages (temporal community?) that bloggers generate could be a very powerful tool, to gel thinking and lead to a wider input in the ideas phase.
Carla Lilia and I & others will be exploring this further