We can't expect the forum to stay online forever but there are some nice threads with a ton of information in them and that should be saved somehow for future bitcoiners. I know that some people will have a seriously bad reaction to suggesting the entire forum be stored on bitcoin itself but doesn't it make sense that that's where it belongs? Bitcointalk is the de facto forum for bitcoin everything.
But what's the idea? Is there a backup/copy of the forum, in case it stops working? This is already being done by some users.
Or is it putting the website up and running in a decentralized system?
This would, based on current technology, be very complicated. This required each user to store hundreds of GB of information to visit the site and consult. And even if there was the possibility of visiting the website without downloading files, the speed would be low. I'm not saying low speed when browsing, but rather when updating.
In the end, someone needed to pay for an online server, to serve as a connection point to all parts of the site, spread among the various peers.
I understand the concern, but the site administration has several plans to ensure continuity in the project. Of course we don't know the future, and a lot can happen. But, for now, as long as another operating model is not possible, this model is assured.