This is a little suggestion for a new bukkit plugin, for any basically server on Mineverse. It's called CoreProtect, and it's an anti-griefing plugin.

To be completely honest, I only know one command-it shows you who and what placed an item. Just by doing /co inspect and right/left clicking an object, it shows you the exact time a player placed something.

And get this:
It shows who briefed EVEN with World Edit!
[Yes, that means Noobcrew will finally know who is griefing the spawn in Creative.]

It can be used in Creative, Survival, Factions, Skyblock, Skygrid, or even Prison!

I have thought about who would use it; it would be a great plugin addition for all players because theres not much to it but showing you who placed/broke what.
Obviously, you'd have to take away some of the commands that players may us that are not supposed to.

However if giving this permission to players doesn't seem right, you could always give it to Mods/Admins so if anyone is griefed real badly, that someone could get help from a moderator.

Here is the link:

http://dev.bukkit.org/bukkit-plugins/coreprotect/

Thanks for reading!