Short, concise description of the idea
If you decide a community you have is useless, you can delete it and get the code back.
Full description of the idea
I posted about LiveJournal on a site I belong to, called photoSIG. It is a huge site for photographers. Many of them are interested in joining LiveJournal, and I simply don't have enough codes to invite them all. (They had 1000 people log on in the past 24 hours, 654 photos posted, over 4,000 critiques posted, 270 message posted. It's a large site.) Not everyone wants to jump into something new and paying for it right off the bat -- what can I possibly do? Even the owner of photoSIG wanted a code, thankfully I had one. I also have a community or two that I could stand to delete, they aren't really getting any traffic. This would give me a couple of more codes to give out to other people if I could get the code back if I delete the community.
An ordered list of benefits
An ordered list of problems/issues involved
An organized list, or a few short paragraphs detailing suggestions for implementation