Changes to Facebook's site break plugins created by ProPublica and others to track and report on exactly how Facebook users are being targeted by advertisers (ProPublica)

ProPublica:
Changes to Facebook's site break plugins created by ProPublica and others to track and report on exactly how Facebook users are being targeted by advertisers  —  Our tool had let the public see exactly how users were being targeted by advertisers.  The social media giant urged us to shut it down last year.

from Techmeme http://bit.ly/2Sf0dCK