Utterly Mad

>Buy incredibly linear but fun game.
>Complete it before 2 weeks.
>Refund it.
>Congrats! You have had all the fun of the game at 0% the price!
(Although, no fun game I know of is linear enough for this. Except some visual novels, if you're otaku to the point that you have a hug-pillow into those types of glorified books games.)

In all seriousness though, this is a good thing. Now I don't have to worry about wasting money when buying potentially-crap games that steam seems to be full of.