I admit that I haven't used this software, so I'm not giving it a rating. But, all you need to do to block popups is download Mozilla or Firebird for your browser. They're free and have built-in popup blocking. As for blocking Windows Message popups, this is just a system service that you can shut off (again, for free). It's nice that people write software to help out novice users who may not know how to install new browsers or turn off services, but $20 is a really high price for something that can be had for free through other means.