I know tweakers.net has it, I liked it, and I wanted it for myself. The uris of news items are like this: http://core.tweakers.net/nieuws/50373/intel-stoot-ontwikkeling-netwerkprocessors-af.html

First you get the id, than you get a nice version of the title ending with .html. This is a nice way of making links, scoring high for a googlebot and is incredibly easy to read.

I first tried to use only the title as an identifier. Now normally there would be a problem with having titles in your uri. First of all you might want to have special characters in your title. Rails automatically converts them back into the characters they are when evaluating the routes, so it would result in this problem: /news/my%2Ftitle.html would evaluate to /news/my/title.html, which the Rails Router doesn’t understand. Read more