Development of Creative Commons licenses

[Alex Trujillo <cryptoquick AT phyco.org>]

Hello; I'm an avid MediaWiki operator.

My latest project is a FictionWiki-- a wiki for the collaborative  
editing and fabrication of stories.

However, there might be certain problems with this idea.

Since the wiki can be edited freely-- once you sign up as a member,  
of course --anyone can make changes to the work that's hosted there.  
Edits are tracked, so vandalism shouldn't be a problem, but what  
would be a problem is if someone makes a small change to the story,  
or even a large one, and they become owner of the work. How would we  
define the owner or owners of each story?

Also, if a user wishes to publish one of their/our hosted works, will  
they have difficulty, since it was already "published" online, or  
that the license may be considered to belong someone else?

Are there any other points I may be missing? Should I be worried?  
What license should the wiki run under?

- Alex Trujillo, aka CryptoQuick,
FictionWiki.org, Phyco.org, Syst3m0v3rl0ad.com