vincevincevince - 6:22 pm on Jul 4, 2007 (gmt 0)

One important point here is the expiry of copyright. As things expire and automatically enter the public domain, the job of sorting and archiving becomes automated by the public at large. If documents are remotely interesting they will be held on webpages and archived in any number of digital formats across the world. Just take a look at the vast libraries of software available for obsolete computers, kept up by hobbiests and those who use emulators.