dogs

Gong to contradict myself now...buying used games doesn't win any battle against gamestore profits. It just adds to gamestore profits. They sell a game new, buy it back for a fraction of the original price price then sell it again at a slightly lower than new price repeat ad finitum. Anyone buying used games is still being ripped off IMHO.
And then there's the gamestores who buy back games and then sell them as new...ever bought a new game and wondered why it's not shrinkwrapped and there are one or two minor scratches on the disk?

Buying second hand may win your battle against gamestore and publisher profits but it doesn't put any money back in the hands of the programmers/developers who are also being paid a pittance in comparison with the profits made by their employers, publishers and gamestores.

Personally I think online purchasing systems like Valve's Steam are the answer. Ideally the savings made in avoiding publishers and retail outlets is invested back into game development.