Who is responsible? An anonymous owner who registered www.ModernWarfare3.com with Domains by Proxy - a US service that keeps buyers private.
Before ModernWarfare3.com pointed elsewhere, the site contained an anti-Call of Duty video and defamatory text claiming Battlefield 3 would be the superior game, according to Kotaku.
Is such a tactic beyond EA's aggressive marketing campaign? Could this simply be the work of an irate fan with enough money to clinch a high profile URL from underneath Activision's nose?
Activision doesn't own website ModernWarfare.com or ModernWarfare4.com. And it's highly unlikely Activision owns ModerWarfare3.com - unless this is some twisted/ingenious marketing ploy.