PopSwat is a small application that suppresses or "swats" all types of pop-up ads, including Messenger Service ads and those generated by ad servers when you browse with Internet Explorer. PopSwat requires no configuration or tracking of blacklists and whitelists for regular pop-ups. The program automatically distinguishes between the pop-ups a user browses to and those generated by advertisers. The advanced features of the program allow users to add different ad servers to monitor as they are installed with other applications. PopSwat is easily controlled from the icon tray (next to the clock), uses almost no computer resources, and has no spyware. Version 3.0 includes improved handling for ad servers and a streamlined registration process.