I really wanna support my favorite developer who make such awesome game's with there hardwork, passion & dedication but I'm damn broke. I'm person who appreciate other's work & don't look for pirated sites instead of official if it's free(again I would pay double amount to any Dev who's game I like if I was well settled).
Advertise, interact and donate are all methods of support, only one requires money. And getting the game by other means (especially in a format not otherwise available) does not preclude, limit or harm any of those forms of support.
One of my favorite authors releases a bunch of his books DRM free in digital format as "reader crack" to get people into his books. He just asks that if you can afford them, consider buying them. If you can't, pass em along to more people. Not saying that mindset should be standard, but it kind of underscores my point