Writing-Related Resources

In no particular order.

The Elements of Style - William Strunk's classic guide on writing.
Scarlett Archer's writing-related links
Seventh Sanctum Story Generator
The Snowflake Method for Writing a Novel
Holly Lisle's site for general articles on writing
Writing resources from elfwood.com
Arduinna's Chrestomathy - On writing rules
Writing resources at Fanfic Bunnies
Fiction writing at about.com
Patricia C. Wrede's Worldbuilding Questions
A collection of writing reference sites