TotalHalibut - Used Games
Steam can be a a huge distribution method, I feel like the consumer on Steam should have the ability to sell the games they bought back to the developer, so people can buy that used, discounted copy from the developer. Edit: Maybe for it being "Used", the CD Key can't be used for online play due to it already being activated.
Ad space for Servers in games can help a lot for server support. This would have to be tinkered with.
Microsoft and Sony should develop a platform like Steam for the next-gen consoles.
With Valve hopefully making a console soon, they can help the Console-market with Used Games sale, again combined with the consumer being able to sell the game they don't want anymore back to the original developer or publisher.
