Gotten frustrated with a user? Want to vent? Feel like punching them?
Don't worry, here's a script that adds a "Punch" button to every gravatar. You can punch all the worst users now:
Installation
Click here to install. Will work in Chrome or Firefox (the latter requires Greasemonkey). See this page if you have trouble, or want to install on Opera/Safari/IE.
The majority of the code from this was taken from this script by @balpha