Just for the record - If the person wants to support the industry, then:

a. They themselves may never sell any game they have bought, ever. Not to a retailer, not to a friend, not on ebay, not at a garage sale. If they're done with a game, they toss it or keep it in the closet. By selling it they are removing a sale from the companies.

If we truly want to support the industry, then we must shut down all auctions sites, close down the buying and sell forums, craigslist, and the like. The only people that can sell any product are the retailer and the publisher, and they must all be new.

Most people can't grasp that retailers used stock comes from the gamers - the retailer is nothing but a middle-man. If there was no demand for someone to buy back games instantly from a consumer (without auction fees, etc) then the used game market would not exist.

Side Note: I find it funny that a person who gets their review copies for free is bitching about supporting the industry. Wanna show your support? Buy all the work copies from retail.