I really appreciate sites that intelligently try to redirect you to the pages you may be looking for. Let’s say I’m looking for ajax information on a given site, I usually simply try to use the word in the URL to see what happens.
On Microsoft, see what happens:
Now try it on Yahoo!:
How about our hero, Google:
C’mon! You’re a freakin’ search engine for heaven’s sake!
How difficult is it to simply take the words in the URL and come up with some search results that might guide you to the right page? It’s not so difficult!!! In fact, I programmed it into my site tonight in about an hour:
I simply used the same logic that the related posts widget code utilizes and applied it on the 404 not found page. It scores the content based on the keywords (there can be more than one) pulled from your URL. Your theme will need to support a 404 page in order to implement it. Also, this one is built for my theme, you may have to make some modifications.