Facebook also continuously marginalized their Chief Security Officer who routinely complained about the API loopholes, were caught informing employees of a "don't ask don't know therefore no liability" quasi-official policy towards the widespread abuse (don't rock the advertising/business boat), and eventually reduced the CSO's staff from 120 to 3 and role to what appears to be "tweeting pre-approved pro-Facebook messages".
The FTC is now investigating if Facebook has violated it's 2011 FTC privacy mandate, something which carries fines in the millions per event range I believe (i.e. trillions of USD in fines for this size of privacy mandate failure)