It appears that Hell has frozen over (or it's just part of the advertising of the map pack
), Modern Warfare 2's multiplayer will be available for free through Steam on through the weekend (starting Thursday at 4pm PDT).
So there you go, a few days of trying out MW2's multiplayer if you didn't like what they did with IWnet and at least wanted to try it out.
It should be available to pre-load, but I have the beta UI and it doesn't seem to want to do anything when I hit the link.












