It looks like one of the features I personally had hoped to see when Bungie.net became integrated with XBL is coming to fruition: RSS feeds for individual stats. Right now an XML button for an RSS feed of "recent games played" is visible on the Stats page of Bungie.net users that have linked their gamertags. It looks like the button only appears on your own Stats page, so to get the feeds for other players you'll have to ask them. As I haven't been able to play any games yet, I don't know what kind of information is in the feed, but still, the idea is pretty sweet.