How do I share a campaign I built with another D20 mentor?

Once I build some custom content into a nifty complete working adventure, how can I duplicate it for another GM to share?   I have several adventures nearly to the point where I want to share them.  For example, I want to be able to give them the dynamic lighting work I've done, all set to go. On a similar note, for Roll20 to succeed long term there will need to be a way to import/export content.  I know that's non-trivial :-) Bruce

Thanks for the quick answer! So, what plans are on the horizon to allow sharing of campaigns?  I am aware of the potential hot potato this issue brings up, but it's going to need to resolved eventually ... Legally, it's a can of worms. Technically, it's a matter of changing one UID in a database.

Well, I suppose you can copy/extend the campaign, make the other GM a GM in the second campaign, and he should be able to do everything there too, but you're still a GM there as well.

That's the sort of workaround I was looking for.  I suspected there was a way to do it. Thanks!