Halo Reach API
Bungie has finally gone and released their API. This would have been a god send when I was creating Halo 3 Players way back in the day. You have to be a Bungie Pro member to get your API key.
The API documentation providers in the stats API group on bungie.net didn’t please me ascetically so I went ahead and reformatted it a little bit and threw it online here. Feel free to use that for a quick reference guide if it suits you better than Bungie’s official documentation.
Also, it looks like the community is ramping up pretty quickly. HaloReachAPI.net is a new wiki that went up already and looks to be a pretty great resource for anyone using the Reach API. Head over there and contribute if you can!