An interesting feature of Halo 2 was mentioned in a post on personal site davextreme.com - Multiplayer Stat RSS Feeds. His post (quoted with permission): "Really cool thing I discovered today about Bungie.net's stat tracking: RSS feeds. Not only do they track every single kill in every single multiplayer game (along with who did it, how it was done, and where it was done), but they put all this data into a feed you can subscribe to and never miss out on post-game scrutiny. Of course, to get to all of it you have to go through a really obnoxious sign-up process (which involves -- shudder -- getting a Microsoft Passport account), but once you've finally gotten signed in, associated your gamertag with your Passport, and found the stats page, there should be an orange XML button. Pop that into your favorite newsreader, and you're ready to obsessively review every single frag."