Rod Cockcroft has extended the facilities at (from a Blender cómic directory) to include graphic novels created with or partially with Blender and has started a new Sintel story.
In the forums people can collaborate with others to create or discuss stories. Links can be created from each scene in a story directly to the forum so each scene can be discussed easily. If you think you can create a better storyline than one that has already been created, a forque can be inserted to create a new storyline.
There are three forums for writing and discussing stories:-

Creative commons stories

All the content in this section must be Creative Commons

Mixed copyright stories

People can contribute to stories in this section and include copyright restrictions on their work while including content with a Creative Common

Copyright protected stories

This section is for stories that are completely copyright protected.
Anyone could include a story that they have completed themselves or could develop a story in a private forum with only invited members in their group.
Rod has put the new Sintel story in the Mixed Copyright Stories section. If anyone would like to join in or start a new story visit