XSS? I'm still hiding from all this syndication format stuff. My one venture was to install AmphetaDesk and convert my Radio subscriptions list (since when I tried to have AmphetaDesk import it, it complained it didn't understand the file). I got it to import and scan, but every time it tries to start the web server, the message in the console ("If your browser doesn't open...") displays, and AmphetaDesk promptly crashes. I sure haven't heard anything about it, so I figure it's something peculiar to my machine (XP? It shouldn't be Radio since it's not listening on 8888). I guess I'll just wait for Fredrik Lundh's news reader, or Joshua's Teacup aggregator.
Or keep using Radio, of course. There's still that.