[quote][b]Posted by:[/b] BlueblurONE Its sad that a user has to post this instead of an actual Bungie employer. Bungie am fail.[/quote]All the information comes from Microsoft. There is a publicly available paper on TrueSkill and how it works which is linked by the OP. So a write up really isn't necessary as it's already available. Bungie may have taken a few liberties of there own, but the heart of the system is described in that paper. However, a nudge in the right direction by Bungie may have reduced some of the initial confusion. [Edited on 12.08.2007 2:27 PM PST]