My Contribution

I have done some refactoring of your code directed towards multiple arenas and some custom settings (mostly based on requests in the comments on bukkit.org).

If you like, you can merge my branch, otherwise i'm going to use my version just on my server (I won't make a copy of your work).

Multiple arenas is not finished yet, but that's coming very soon. Please have a look at the config.yml, there you'll find the added settings.

Cheers,
jaakon (jaakon2k in Minecraft)