ProtectionStones allows a player to place a special block, and this protects their area from griefing.
This small plugin was inspired by PreciousStones but only has the property protection blocks. This allows players to place one of three types of ore blocks to protect their property.
Official URL : http://dev.bukkit.org/server-mods/protectionstones/
Servers using ProtectionStones, page 2Servers: 26