Look, there's a lot of griefing on the server lately, but I know a plugin to fix that, and ban griefers in 1 second!
I think the plugin is called hawkeye (I'm not 100% sure anymore :S)
But then mods can:
-See who removed a block
-See who placed a block
-Fix a specific area (roll-back)
(and maybe some other things, I don't know them all)
wouldn't this plugin be awesome?