This applies to dynamic url’s like the ones used in e-commerce pages where, rather than a static page, 1000’s of products pages are produced dynamically.
This usually shows in the form http://www.example.com/sid=5. productid=5. This obviously has little relevance to any products or services, and instead by changing the code structure of the url, you get much more friendly url’s such as http://www.example.com/video’s/die-hard-with-a-vengence.
Usually within content management systems such as Joomla, wordpress or drupal, this can be easily set up via plugins. E-commerce sites also may have additional software to help rewrite url’s to make the more friendly.























