Maniacal
the green Napoleon
However, in a recent podcast, he also revealed (at the 1:41 mark) that the PC version will not have dedicated servers, nor will it support user-created mods like the original.
Instead Infinity Ward will be using a propriety matchmaking network called IWnet that runs along side Steam to do all matchmaking so that it will "allow matchmaking for our PC users as well, just like you have on a console that’s built in on Xbox Live and PSN."
Sources:
http://worthplaying.com/article/2009/10/18/news/69454/
http://www.destructoid.com/mw2-not-delayed-on-pc-will-not-have-dedicated-servers-152335.phtml
http://www.modernwarfare2.com/forum/viewtopic.php?f=24&t=123824&sid=4843b583334fcb26e5d09b1c5c86d939
Main thread on IW's forums about the lack of dedicated servers, plus every single other thread in the PC section is about the same issue.
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So apparently there will be NO support for dedicated servers (like how pretty much every single multiplayer FPS game uses) instead there will be a console-esque matchmaking service? What the bloody HELL is this crap?