VandalSniper is a great new counter-vandalism tool created by Crazycomputers. It is like VandalProof, but has a few crucial enhancements. It can be a little hard to install, because it is still in development. Before you do anything, you should probably read up on it first. Since this guide doesn't seem to get many visitors, and VandalSniper is still somewhat of a road less travelled in favor of other tools, here are two words that might pique your interest in the program: instant notification.
Before you attempt to run VandalSniper in a dedicated capacity, please get authorization to use VandalSniper first from Crazycomputers. You can apply for permission to use the program's rollback features at User:Crazycomputers/VandalSniper/Users.