The ad meisters have gone too far. The pesky banner ads are bad enough but lately its the prolific pop up or pop under windows which spawn obtrusively. While anti virus and firewall software is the norm, we must now include ad filtering. I installed AdSubtract Pro and it is terrific. AdSubract blocks cookies and even the highly annoying FLASH animation ads. AdSubtract uses an updateable database (annual fee) to stay ahead of the latest ad hijack gimmicks and tricks.