Fiddling around with redirects
On my dev server I’ve been moving things around a lot, meaning that some of my pages are simply not where they used to be. Wanting to preserve the old URLs, so people or search engines won’t get 404 File Not Found errors, I stumbled upon a great article by Steven Hargrove. This article explains quite well how to go about doing so, with the use of just about any language you can think of.