holy fuckWell, it really depends on the developer with the risk. Anduo doesn't do this (AFAIK), but some other developers include things like encoding the supporter's user name into the game. The idea of that is so when a copy shows up on a pirate site they know who the leak was, so can remove them from being a supporter. That's usually something done for much smaller (or obsessive) developers though.
IT's not something that's common, but does exist.
disgusting
sounds like anti-advertizing
if I will find a game like this, I will never donate to devs