WPCentral posted a story that Microsoft is developing a 'Switchboard' for Windows Phone 7 multiplayer gaming
"Multiplayer gaming on smartphones is a very challenging technical problem, Gamers move around, the wireless channel is hostile, the bandwidth you need is not always there, disconnections can happen, and smartphones are energy-constrained. If you just take a game and put it on a smartphone, it is not going to work."Microsoft developing 'Switchboard' for WP7 multiplayer gaming
Fear not, all is not lost. The talented team at Microsoft Research has been hard at work on 'Switchboard' - a potential answer to most (if not all) problems with multiplayer smartphone gaming in its current form.