Creating The Best URLs For Your Content

The SEO Blog has a great article on the Top 10 Fatal URL Mistakes and includes this great list of tips for doing URLs right:

 My 10 URL design rules are quite simple:

1. Make the URLs clean
2. Make them simple
3. Make a URL human and machine readable
4. Use one URL per page
5. No special characters besides a minus/hyphen “-” ideally
6. Use slashes like real directories
7. Enhance URLs with numbers but don’t rely on them
8. Skip the date, it’s not the most important info
9. Do not ever change URLs once set
10. If you have to change URLs move them with a “301 permanently moved” redirect