London: Mozilla, the maker of Firefox, has unveiled a new add-on for the popular web browser that gives users an instant view of which companies are "watching" them as they browse, the Daily Mail reported Friday.
The Collusion add-on will allow users to "pull back the curtain" on web advertising firms and other third parties that track people`s online movements, says Mozilla CEO Gary Kovacs.
Google`s business is built on advertising - the company earned $28 billion from its AdWords service in 2010.
Mozilla`s Firefox is the world`s second most popular web browser, a position under threat from Google`s own Chrome browser. The Collusion add-on is an official Mozilla product, and was unveiled at the Technology, Entertainment and Design conference this week by Mozilla CEO Gary Kovacs.