When 'free' software isn't

Have you ever wondered how Mozilla gets paid by the privacy-hating mega-monopolies like Google? Simple; when you use the default search engine plugins that are packaged with the browser, parameters similar to these are added to your search query:

client=firefox
name="appid" value="ff"
name="hspart" value="mozilla"
These parameters inform the search engine that you're using a Firefox/Mozilla product and that, in part, is how Mozilla is able to rake in millions annually.