Useful URLs

1. Introduction
2. Useful URLs Abstract the Underlying Storage Mechanism
3. Useful URLs are Hackable
4. Useful URLs Prefer Hyphens to Separate Words
5. Useful URLs are Lowercase
6. Useful URLs omit www.
7. Useful URLs are Idempotent for GET Requests
8. Useful URLs can be Misspelled
9. Useful URLs Omit Filename Extensions
10. Useful URLs Omit Port Numbers
11. Useful URLs are Permanent
12. Useful URLs Omit Session Information
13. Useful URLs Omit Query Strings
14. Useful URLs are Readable
15. Useful URLs are Short

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