I'm willing to pay for the forums on my own as soon as we won't consume TOO much bandwidth (no worries yet ), but I'm not willing to pay for the gaming server out of my own pocket. The game server will only cost $20/month though, but still.
The people that donate regularily will obviously get a better user title, maybe a gaming server moderator/admin position, options to vote for the games that should be hosted and so on.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram