Demonstration
Extra-pretty URLs with slugs
Each story has its own "slug" (name shamelessly stolen from Wordpress) which forms the last part of the URL. This is a short word used instead of an ID, which makes it friendlier for your users, and easier to remember.
Goldilocks and the three bears (slug is "bears")
Hanzel and Gretel (slug is "hanzel")
Rapunzel (slug is "hair")