I think part of the problem may be that you're still far from the goal. If I were a heavy user, I might consider donating $50. But there's a huge risk that you won't get to $1,000 and my money will be "wasted" (not wasted, but not bringing about the desired effect either). Because of that, I'm inclined not to do it. It seems to me like you've got a chicken and egg problem here.