WOW! I found a way to stop greifers. Permissions Plugin/Mod. use it to stop griefing! I mean it really works its awesome! Install it like any mod/plugin that you use normally. It is on servers such as UberMinecraft, ItsJerryandHarry
and Ipocketisland. It helps a lot on your server! Finally no more griefers or arsonists! Anyway bye guys!!!! :D

-atilliz2