Can some one make a plugin that allows players to buy areas with iConomy money, and than that area is protected from other players.. / Sorry for my bad english, hope you get it.
If you could combine it with something like cuboid and the server runs the /protect command on behalf of the user, it would be moderately easy to implement.
i suggest you ask the creater of worldguard and have him allow a a way to turn on and off that feture in his config. The link is: http://forums.bukkit.org/threads/wo...ds-blacklist-sponges-block-fire-creepers.790/
