Online Collaborative Fiction Anyone?

jaxon_brooks asks: "I'm interested in doing some collaborative fiction (not interactive fiction) using a web front end to a text revision system. There is a project on SourceForge called CoElab, which stands for 'Collaborative Elaboration'. But they are in an early stage of development and have yet to release any files. Does anybody have experience trying something like this? I know Perforce and CVS are designed for coding, but would it also work for fiction? Maybe it could be the beginning of a collaborative writing community." If CVS is good enough for text documents and code, it's good enough for prose, however are there other alternatives that might work for this situation that haven't been mentioned yet?