The first of my 13 story ideas to get off the starting block is a collaborative story I've been planning for a while. I've called it a blind collaboration as none of the other contributors will know what each other are writing, and none of them know what the point of the story is.
I've had six volunteers from among the Aphelion community, so it's about ready to roll.
How does it work? I've created a setting and background against which all of the contributions will be written. I'll also set a common time frame to avoid continuity problems. Each author will be free to create their own character to do with as they will, within the bounds of the setting of course.
The rest is a secret. Actually, several individual secrets known to each author individually. They won't know the significance of their respective communiques until they see the final story.
I think it's going to be great.