I don't know if SE encrypts login or not. Regardless, Pingzapper could be logging keystrokes client-side for all I know. Does it route all of your network activity through their proxy or just the games' traffic? An anonymous closed-source program that fiddles with your internet connectivity seems like a bad idea.

It's apparently run by these guys in Hong Kong: Fyrolabs Their website is pretty, but sparse on details. It doesn't leap out at me as being the most trustworthy kind of thing to be sending money to. Who knows though.