Valve's move to start selling community-created mods on its PC-game storefront looks like it could boost that $57 million user payout from earlier this year. And it's starting with The Elder Scrolls V: Skyrim -- one of the most popular moddable games. The process sounds pretty easy as Valve tells it, too. Upload your tweak to the Skyrim Creation Kit, agree to the new Steam Workshop terms, enter payment info and set your creation free. Within the week, it'll go up for sale at a price of your choosing. You can even add revenue splitting if you're working with a team and generally control the whole process from start to finish.