I did not see it before: Event Blogging Service. But got track of it with Gnomedex. This guy, Kris Kurg, ha started a new company to work on events. He has an aggregator service, Flickr photosets incorporated, an eventschedule, posting tracker and of course the postings with trackback and reply. An RSS feed is also part of the game. Seems to me a businessmodel which could work.