prostoalex writes "When the story of Firefox Web site visitors being predominantly male was published, many questioned the methodology used to acquire such research data. This MSNBC article talks about another research company, ComScore Networks, using a free antivirus utility to lure the Web users into downloading a small utility to their hard drives. The catch? The software watches not only sites visited, but even locations of the mouse clicks. ComScore swears the final data does not contain any personal information, but, as the article states, anti-spyware utility manufacturers are still thinking whether to include it on their list."