Spent much of the weekend messing with Peerkat and Zope and xml. Got on the peerkat mailing list (on yahoogroups.com) and found the answers to some problems. Peerkat only takes rss 1.0 feeds, which few places are using. There is a url that'll do the conversion on the fly for you, though.
I have been working on tweaking xpilot settings and maps to keep the kids entertained in the classroom when they are done with their work, as we creep toward the end of the school year. Teamplay is complicated, however, and not well documented.