I found details of this intriguing little journal and thought their 'first line' approach to stories very useful for kickstarting ideas, as well as for submissions to their publication. They provide the first line of a story and entries should be between 300 and 3,000 words.
The first line for the current submission is 'It had been a long year', and entries should be emailed by November 1st 2011. They offer a token payment of $20 for published stories, but it's also a great site for first line ideas. This is often all we need to start the seeds of a storyline, so it's a valuable creative exercise.
Full details and rules of submission are on The First Line website.