I will admit, I'm wondering how it will play out. Some of the early F2P games (Evony being one of them, I wouldn't waste your time with it though) gave MASSIVE advantages to paying players. Now that game is entirely PVP, which pretty much made it to where free players either were forced to quit, or were forced to pay. When I started hearing about MMO's going F2P, I was worried they would have the same issue. However, other then a couple of them, I've been pleasantly surprised with the ones I've tried.