Pop Up Blocker Pro and Spyware Detector uses patent-pending pop-up blocking technology to block unwanted pop-up ads and still allow the ones you want. It also prevents Messenger Service ads, banner ads, and Macromedia flash ads. It can even detect and close spyware, adware, and virus programs that serve ads. In addition to blocking pop-ups within Internet Explorer and Netscape, it blocks pop-ups when using Kazaa, Morpheus, Gator, or Chat programs like ICQ, MSN, AIM, or Trillian.