It's pretty scary how the hoster doesn't want to support the old protocols, though. Meaning, if you've got a forum, you're bound to update every few years, or everything disappears? This sucks. What if you fall sick or die? (And leave the money to pay for the next N years, but, naturally, you're not around to do the updates). Or just want the forum to be preserved?
For reasons of functionality and security, these types of things march on. Particularly on a low-cost, shared server, the risks of leaving old software running are far too great, because one site could compromise many, many others.
I expect that there will be a niche industry in the future for "digital trustees." As there is in the world of finance, where one turns over daily management of investments to a trustee for years, decades, or even centuries, a business could be built around doing this sort of thing--"make sure my blog is always readable, no matter how Internet technology evolves in the years to come."
The Attic's biggest mistake was in using PostNuke in the first place, which was always a crummy hack. They made such little use of the portal aspect (and the shared login never actually worked) that they should have just stuck with the basic phpBB forum, or switched over to it once it became obvious that it wasn't actually providing value. In fact, I'm not convinced that they couldn't more easily just port the forum-based data and abandon the (valueless) portal data, but I don't know enough about how PostNuke messed with the phpBB data organization to be totally certain. There are a lot of phpBB experts out there, though, and I would expect that one of them could deal with it in fairly short order and keep people on the forum software they're already accustomed to.
Anyway, Invision is this horrible thing that stutters each time I post a quick reply at Studios, right? Then, yes, a mistake it is.
Studios has a much, much bigger database and higher traffic (and I will always be convinced that starting out on the early,
super buggy first versions of Invision led to problems that linger today) but yeah, it's what G3, Studios, and BWL run on.