Amber: a server-side plugin to keep links working on blogs and websites
amberlink.org
amberlink.org
It's a great idea, and one that we've long needed a solution for. However, could this possibly be done as a JS snippet that uses a central server by default, to make it easier to integrate into static sites? As-is, it isn't much use for my blog, or many others who use popular blogging platforms (which allow you to embed whatever JS you want, but you sure as hell can't install a server plugin)
This is the article that first made me aware of the problem: http://www.gwern.net/Archiving%20URLs