I admin on a music torrent site(legal one),Once a year,sometimes not even that,we do a mass mailing and ask for donations.The money is only spent on server costs,just to keep it goin.We usually get enough in donations to last a whole year in one shot,Most times its more,with some people using paypal and making regular donations monthly,we have about 9/10 thousand members,but only about 2000 really are active,ie.. visiting the site,downloading shows,posting in forums. etc.The ones who use the site the most are usually those who donate.they do not get anything special from it except their name in a forum post of donors but everyone seems happy with just that.Maybe the same thing would work here.I probably would not use any of the things that have been suggested but you never know.