Perhaps if ZooChatters paid a small token fee annually ($5 or less) then that would easily cover the cost of extra computer storage space.
$5 is nothing; I think each and everyone of us spends that and more each time we visit a zoo; even if we have a membership and thus get in for 'free', instead it goes into fuel, snacks, etc.
I paided this year and most likely will renew my membership, even if I have not used any of the member features apart from increased message space. Still haven't decided though, depends on this and that, including what Snowleopard mentioned.
This is the only forum we zoo lovers have, operated in English at least. German-speaking Europe has several, but the difference between them and Zoochat is that even amateurs such as myself can enjoy themselves here, while I think you need a PhD in Biology/Zoology to manage on the advanced level of discussions that take place on the German-speaking forums. There are several Conservation forums too, but their topic is no doubt mostly in-situ conservation while we are mostly into ex-situ conservation (i.e. preservation of animals in zoos, not in the wild)
Here are some questions for SIM:
1) How many of the 3834 members are paying to support the site?
2) How many would it take in addition to the present figure to rejuvenate the site?
3) $25 may seem a lot to students, but those who have a job spend most likely this amount every day on something they don't need or even want without even noticing it. I have been both. We might have a student and full-paying membership, say 25% off for students? If you are a student and reading this, would it encourage you to contribute to our community?