What's the significance of this? It seems to me it's just something to stifle used game sales. I wouldn't really call this DLC. It's simply a security measure. I'm sure this is exactly like what EA did with Madden 10. They took features you would expect inside the game, and removed them to give codes out to new buyers and charge everyone else $10. Woo hoo! That'll sure show those Infinity Ward punks who's boss! They weren't awesome enough to remove four maps and use them as tools to rid used game sales of Modern Warfare 2.