The reason most of the links aren't updated is because they have to be modified manually. We've gotten a bit spoiled with the new database driven Examples page, as it takes only a few seconds to find and change a link (once we get around to it anyway).
It wouldn't surprise me if we (the admins) had records of every dead link on the entire multi-megabytes of text on this site. There are automated CGI trackers of 404 links running, and we get quite alot of 'dead link' reports mailed to us.
If you really want to help, choose a page(say, the spinners page, since it's already come up) , bring it up in the Netscape HTML editor (what Saint uses), and correct the links. Save it and upload it to a web space somewhere. Tell us about it, and we'll do some final editing (some of the files are named differently than are displayed) to make it ready. Of course, you still have to wait for us to get time, but the hard and time consuming task would be done for us.