Another Way

There is another way of playing MW2 without spending money.

Join Lockerz, which is an beta site, where you can get points and use that to buy Modern Warfare 2 from the site. Right now, you can get 4 points a day, 2 for logging in and 2 for answer daily questions. You can also get 2 points for watching a video, and there's about 20 videos up right now in the play section.

You can get 100 points in roughly 25 days, which is all it costs to trade it in for MW2.

However, because it's beta, you'll need an invite to join.

If you need an invite, send an email to sgtdes@gmail.com