I often come across interesting ideas and tools that I have no current use for but seem like they may be useful someday, so I bookmark them and hope I will recall them when needed. That process is what led to the current implementation of site search located at the bottom of each page on this blog.
At some point I came across an article on the the Google Webmaster Central Blog about enhancing a site's 404 page. I thought it was a pretty cool idea, and I'm using it on this site. The required code is very short:
When I needed a search for this site I decided to try this technique. So here it is, a simple search script: