TrackMeNot is a lightweight browser extension that protects web-searchers against surveillance and data-profiling. It does so not by means of concealment or encryption (i.e. covering one's tracks), but instead, paradoxically, by the opposite strategy: noise and obfuscation. With TrackMeNot, actual web searches, lost in a cloud of false leads, are essentially hidden in plain view. User-installed TrackMeNot works with the Firefox Browser and popular search engines, e.g. AOL, Yahoo!, Google, and MSN, and requires no 3rd-party servers or services.