Here's the simplest possible guidelines I can imagine -- and the simplest
possible guidelines are almost always the best. :)
1. Community members are allowed to create Fedora SIGs. Create them,
announce them, rally support around them. Do whatever you like.
2. Fedora Projects may *only* be announced by the Fedora Board.
3. State this policy on fedora-announce-list, and make it prominent on the
wiki.
4. Anyone who violates this simple policy will be corrected as quickly as
possible, and asked to go back to everywhere they announced it and
announce the corrected truth: "oops, I created a SIG, not a project.
Sorry."
Simplicty and consistency. That's what makes rules stick.