If people want to support me (or other developers) I always welcome that, of course. But I have a few problems with PWYW. It can come off as greedy and it's 2 extra clicks (and a loading page) before being able to download the game. The thing is, if I turn off PWYW then players that want to support me can't.
I'd like to be able to include the "support this game!" button that is already included with browser games, while turning PWYW off.