Archive.org is a great project that one can't recommend highly enough.
It's not "just" collecting huge amounts of data, it is a living archive. For example, when they publish old Amiga software, they publish it ready to use. And I don't just mean polished disk image files. I mean ready to use right in the browser. Click on a ancient game, and play it immediately in your browser!
That's exactly the kind of attitude towards archiving that we need. Like one of the more modern museums where you are allowed to touch (and interact with!) things.