Me too. It seems to be a general trend, with cell companies doing away with unlimited data plans as well. I just moved my brother into school and his school has a policy of charging for data usage above 50 GB as well, I had figured it was mostly just to conserve bandwidth but now I see why.
While I seriously doubt this game (or any game really) will threaten this limit, I am a bit worried as well. Not only for myself, but for the game - I'm sure a LOT less people will be eager to play it when they have to pay outrageous overage fees IN ADDITION TO whatever monthly charges plus the game's price.
As always I'm with Nero, though I've no idea how much data the games will require. Loading Facebook over and over and over requires a lot of data with all the pictures so it could get strange but we'll have to wait and see how the market reacts.
M.A.V.