If the site wanted to make a little bit of money you could post a couple of ads in that big blank space to the right of the tabs and such. I don't thing that'd be too big of a problem as long as they weren't pop-ups, scrollers, or moving pieces, as those typically slow down the browser. The main reason I have for this proposal is that I'm interested to see what you'd do with the money- maybe start making some of that site merch I've heard so much about? Or maybe you could do some advertising of your own. Either way, if you do it I trust you'll make good use of the money, otherwise I'd think this was a god awful idea.
