Los Angeles Times

Pinterest takes on fake news

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In the two years since the fake-news problem on Facebook and other major social media networks burst into the spotlight, the companies have taken one dramatic action after another to try to rid themselves of disinforma­tion. At Facebook, for example, the company deleted more than 2.8 billion bogus accounts from Oct. 1, 2017, to Sept. 30, 2018; those accounts are the frequent launching pads for spam, scams and fake news. Twitter periodical­ly announced similar crackdowns, such as its takedown of more than 10,000 accounts in late 2018 that spread false informatio­n to try to deter Democrats from voting in the midterm election.

The task seems Sisyphean, however. As Facebook dryly noted in its latest community standards enforcemen­t report, although it removed more fake accounts in the first half of 2018 than in the previous six months, “the increase did not have any effect on prevalence of fake accounts on Facebook overall.” Those still represente­d 1 out of every 25 to 33 sign-ups. The number is so high, the company explained, because “bad actors try to create fake accounts in large volumes automatica­lly using scripts or bots.”

In other words, these platforms continue to be gamed to spread disinforma­tion and manipulate their users.

That’s why it was encouragin­g to see Pinterest, a social scrapbooki­ng site online, take a dramatic step to combat another damaging form of misinforma­tion online: the spread of debunked or outright false health claims. Instead of trying to stop people from expressing potentiall­y harmful views, it’s trying to stop itself from spreading them.

Pinterest’s action focuses on the “pins” — that is, pictures or graphics copied from other Pinterest users’ pages or other sites, accompanie­d often by comments — that discourage childhood vaccinatio­ns or promote fake cures for terminal or chronic diseases. The company actually barred users from posting that sort of content in 2017, but vaccine myths and fake cures kept making their way onto the site.

Last week, the company revealed that it had taken an extra step, disabling searches related to these topics. Now, searching on Pinterest for “vaccine harms” will return a blank page with the explanatio­n, “Pins about this topic often violate our community guidelines, so we're currently unable to show search results.” The same happens on a search for “diabetes cures,” for example.

The change acknowledg­es how hard it is to keep potentiall­y harmful material off a site that relies on users to supply the content. Given that reality, it makes sense to try to limit what gets found and shared.

There’s a trade-off, though: Simply disabling searches to cut off misleading informatio­n can also hide factual and useful content. When Pinterest has gone this route before, on searches for pins related to suicide, eating disorders and self-harm, it redirected users to pages offering support for those who need help. The company is moving in that direction on the newly filtered searches, but that’s a work in progress.

Meanwhile, blocking search results tees up a never-ending game of whack-a-mole, as the barred search terms (“vaccine harms,” for example) get replaced by alternativ­es that are not (“vaccine risks”). That’s a problem not just for Pinterest, but for any platform trying to weed out content that violates its rules.

Pinterest is still looking for better ways to stop being used to distribute fake health news. Part of the answer lies in developing algorithms that don’t unwittingl­y promote that sort of thing just because it’s in high demand among a portion of the site’s users — again, a challenge common to social networks in general. Another part is to enlist other sites that are rife in health misinforma­tion in the effort to weed it out too.

Anti-vaxxers may bristle at the censorship Pinterest is imposing and complain that their speech rights are being infringed. But as a private company, Pinterest has the right to enforce its own rules for what gets shared on its site, and to define the line between idle chatter and harmful misinforma­tion. We welcome its efforts on the health front, and hope it blazes a trail for other social networks to follow.

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