billlava writes "Tired of Team Fortress 2 servers that lie in order to attract players, engineers at Valve (creators of the Half Life franchise) have come up with a way to weed out servers that give false information about the number of players online, or custom server options. 'After kicking around some proposals, we came up with a simple system built around the theory that player time on a server is a useful metric for how happy the player is with that server. It's game rules agnostic, and we can measure it on our steam backend entirely from steam client data, so servers can't interfere with it. We already had this data for all the TF2 servers in the world, allowing us to try several different scoring formulas out before settling on this simple one that successfully identified good & bad servers.' Of course, this only works with their games running on Steam."