“TrackMeNot is a 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 trail), but instead, paradoxically, by the opposite strategy: noise and obfuscation. […]
TrackMeNot runs in Firefox as a low-priority background process that periodically issues randomized search-queries to popular search engines, e.g., AOL, Yahoo!, Google, and MSN. It hides users’ actual search trails in a cloud of indistinguishable ‘ghost’ queries, significantly increasing the difficulty of aggregating such data into accurate or identifying user profiles.”