I don't know what exactly we'd be paying for. I don't think you can start suggesting people pay for a forum without understanding why, or how much, and what for, and what it might add/help/save/improve...
Not being funny, but running a website costs little to nothing these days, i fully understand work goes into maintaining and upgrading it, and hosting will no doubt have some MRC, but it's not bank breaking, a few donations a year should suffice.
If the mods/owners/admins need assistance for running costs, or management duties, they can ask, and we will no doubt provide. It's lovely that you guys (me included) love the forum to the extent of outwardly trying to help it without prompt, but really, why not wait until there's prompt from the admins - and then we can treat it like a proper business, they outline what running costs are, we work out as a forum what we need to do to solve that, and maybe somewhere along the lines some volunteers might appear to assist with running things.
Before anyone gets shitty with me for suggesting we don't all cough up money, to qualify my opinion - I should add i'm a sysadmin by trade, and pretty well versed with all things web, hosting and even phpbb. Worst case i have a spare webserver that could run the site for free, and i'd happily volunteer my time to assist. Realistically as the site has been running some time, chances are we're(they're) paying over the odds on old hosting rates unless it's run privately.
Basically, lets hear what admins need, if anything, and we can solve any problems or concerns before they arise. Feel free to PM me for whatever too.