Facebook demands academics disable ad-targeting data tool

BOSTON (AP) — Academics, journalists and First Amendment lawyers are rallying behind New York University researchers in a showdown with Facebook over its demand that they halt the collection of data showing who is being micro-targeted by political ads on the world’s dominant social media platform.

The researchers say the disputed tool is vital to understanding how Facebook has been used to as a conduit for disinformation and manipulation.

In an Oct. 16 letter to the researchers, a Facebook executive demanded they disable a special plug-in for Chrome and Firefox browsers that they have distributed to thousands of volunteers across the U.S. — and delete the data obtained. The plug-in lets researchers see which ads are shown to each volunteer; Facebook lets advertisers tailor ads based on specific demographics that go far beyond race, age, gender and political preference.

The executive, Allison Hendrix, said the tool violates Facebook rules prohibiting automated bulk collection of data from the site. Her letter threatened “additional enforcement action” if the takedown was not effected by Nov. 30.

Company spokesman Joe Osborne said in an emailed statement Saturday that Facebook “informed NYU months ago that moving forward with a project to scrape people’s Facebook information would violate our terms.” The company has long claimed protecting user privacy is its main concern, though NYU researchers say their tool is programmed so the data collected from participating volunteers is anonymous.

The outcry over Facebook's threat was immediate after The Wall Street Journal first reported the news Friday because the “Ad Observer” tool provides valuable insights into what ads are targeting specific types of voters. It has been used by local reporters from Wisconsin to Utah to Florida to write about the Nov....