I, for one, will be canceling my account as a result of this. There is absolutely no good reason that I should have to sign up with a 3rd party company to pay for a game I've been playing on-and-off for the last 8 years.
Does allowing us to PAY for the game via 3rd party software mean that we can PLAY the game via 3rd party software (windower)?
Horribly move SE.