Used game sales don't hurt nearly as much as they'd like you to believe, since it's a 1:1 turnover. Only one person is going to have that one copy of a game at a time, and they have to choose to sell it for somebody else to get it. Companies may go "Oh used games hurt us so much oh boo hoo," but there's a reason they haven't taken any big steps in stopping it.
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SEP Nash, Smelling Like the Vault since 1996
Step FOUR! Get Paid! http://img.imgcake.com/stevenashgifpu.gif