Any contributions go to the guy who pays for the bandwidth out of his own pocket. While the fund was originally set up, against the owner's wishes, to pay for the forum software and (I believe a hard drive or three), there is no specific item or tangible asset the money goes toward. There are still bills to pay. That said, the moderators don't have anything to do with it.
Anyway, contributions are not required. Do what ever you feel comfortable doing. No worries.
