I've been meaning to blog about these for some time.  The last of the rules was published on June 15th, so I've certainly had opportunity.

The good folks at Tyner Blain have come up with what they think are the requirements for writing requirements.  :)

Characteristics of Good Requirements

1. Valuable
2. Concise
3. Design Free
4. Attainable
5. Complete
6. Consistent
7. Unambiguous
8. Verifiable
9. Atomic
10. Passionate

All of the articles are worth a read. I'd add more info on the series, but I'd just be copying or re-wording what's already written in their summary.