TrackMeNot runs in Firefox and Chrome as a low-priority background process that periodically issues randomized search-queries to popular search engines, e.g., AOL, Yahoo!, Google, and Bing. It hides users’ actual search trails in a cloud of ‘ghost’ queries, significantly increasing the difficulty of aggregating such data into accurate or identifying user profiles. TMN serves as a means of amplifying users’ discontent with advertising networks that not only disregard privacy, but also facilitate the bulk surveillance agendas of corporate and government agencies, as documented recently in disclosures by Edward Snowden and others. To better simulate user behavior TrackMeNot uses a dynamic query mechanism to ‘evolve’ each client (uniquely) over time, parsing the results of its searches for ‘logical’ future query terms with which to replace those already used.

Source: TrackMeNot