Hi Allen,
I would respectfully suggest that you/Scream/Infopop have to figure out what it is you're protecting yourselves against.
If it's copyright issues that you're worrying about, then I do suggest you get a copyright lawyer to draft up a standard agreement which covers derivative works, otherwise people posting hacks may have a claim to their work, regardless of the mechanism used to communicate these hacks to others.
If it's access to the scripts that you're worried about, then I would argue that a restricted-access board for certain hacks may be the easiest & most expedient solution.
Perhaps you need a combination of both.
Regards,
Max
