There is a lot of helpful stuff here for writers ranging from places for inspiration & sites to generate plots, characters, and conflicts to a site that will help you record your work to help you record your copyright information and help you develop a case if needed. There is also a resource to help your organize your submissions to publishers.
Sponsored by the Northern Nevada Writing Project, "WritingFix believes this: No one writes with just the right-side of his/her brain. The brain is too complex and cross-wired to believe that. But we believe this too: Ideas that spark a writer's inspiration can start on the right-side of the brain. And for that reason, all writing activities categorized on this page celebrate a right-brained approach to beginning a piece of writing. This page celebrates approaches that are serendipitous. This page celebrates approaches that are random. Devote part of your journal or your writer's notebook to right-brained sparks."
This would be a good place to look for writing prompts. Creative Commons Licensed. See the FAQ page for questions. He allows and encourage teachers to use this stuff. This site is a one man operation and stories aren;t posted immediately. He does not approve of every story.