Wordpress "siblings" released... bbpress and mupress

There are a couple new software packages in wordpress' family: MuPress which is a multiuser (and multi-site) wordpress archicture... is available. IF that had been available a year ago, I might have based my sites on it, because it sounds as though you could have one backend for several sites. I may yet play around with it, but.... let's see.. the other entry is bbpress which is a bulletin board backend that integrates with the wordpress user management system (shared user name/passwords/single login kind of stuff..) Good to see these releases and continuing development.