Can someone please explain to me how a properly configured yahoo messenger would actually cause the problems that this program proports to solve? This is simply scaremongering at its worst!!! If your just looking for something to block the ads there are plenty of alternatives without the hype! I also checked out the website, they propose to demonstrate how vulnerable your computer is by doing the following....1) asking you to download thier file, 2) asking you to run thier file, 3) when thier file has done its dirty work, asking you to allow it to access the internet through your firewall so that they can then tell you whats on your system! Well DUH!