Mozilla Presses Pause on Facebook Advertising
Mozilla is pressing pause on our Facebook advertising. Facebook knows a great deal about their two billion users — perhaps more intimate information than any other company does.
They know everything we click and like on their site, and know who our closest friends and relationships are. Because of its scale, Facebook has become one of the most convenient platforms to reach an audience for all companies and developers, whether a multibillion corporation or a not-for-profit.
Source: Mozilla Presses Pause on Facebook Advertising – The Mozilla Blog