Check out this innovative use of RSS from the Halo 2 guys
"Q: Is there any way for me to display my stats on my own website?
A: For those who are somewhat technical saavy, Bungie.net offers a RSS feed of player stats for Halo 2. You have to first link your gamertag to your .NET Passport and then when you visit the "My Stats" page, look for the orange "XML" icon. This is the link to your RSS feed. You'll only be able to see the link for your own RSS feed however we encourage you to share this link with others so they can watch your Halo 2 career progress. Additional information can be found in the help section. "