Pop Block is a service that blocks keywords of the user’s choosing as they browse the Internet. The free service uses a browser extension to black out keyword mentions in text and images. Popular Pop Block keywords currently include: Chris Brown, Rihanna, Royal Baby, and Black Friday. Pop Block was created by Greg Leuch, maker of the Charlie Sheen browser blocker and Shaved Bieber, a Justin Bieber browser blocker.
via Greg Leuch