The roleplaying conference Knutepunkt 2011 is going on as I type. For the first time since 1999 I’m not attending, but I’ve written a short essay on one of the books. Yes, one of the books, since this year they had three books! You can download them all as PDFs.
Do Larp has manuscripts an blueprints for several recent larps, Think Larp has academic articles on larp, and Talk Larp has various rants and essays on larp. That’s the one I’ve contributed to.