Mark Zuckerberg. Photo (cc) 2012 by JD Lasica.

News publishers have been railing against Facebook ever since the gigantic platform began scooping up — along with Google — the lion’s share of digital advertising. But though people in the media business have long feared that they can’t live with Facebook, many of them have also concluded that they can’t live without it.

That second proposition is now being put to a serious test. Last week Facebook announced that it was changing its news feed to give priority to content posted by family and friends, thus downgrading journalism. As The New York Times put it, “Prioritizing what your friends and family share is part of an effort by Facebook to help people spend time on the site in what it thinks is a more meaningful way.”

Like many journalists, I have long relied on Facebook (and Twitter) to promote my work and to engage with my audience. It’s not exactly clear — at least not yet — what this will mean to individuals who post links to news content as opposed to, say, pictures of their cat. But the implications for publishers are clear enough. And at a time when the news business is besieged on multiple fronts, Mark Zuckerberg’s latest brainstorm is one more thing to worry about.

“For publishers who have come to rely on traffic from Facebook — which for some still drives the majority of their traffic; for many others, 30 or 40 percent — this is awful news,” wrote Joshua Benton at the Nieman Journalism Lab. Benton added that digital-only news sites that rely on free content, massive audiences and online advertising will be hurt the most. Newspapers that have had some success in getting readers to sign up for digital subscriptions won’t be hurt as badly, he added, although they will suffer from a loss of traffic, too.

At the Columbia Journalism Review, Mathew Ingram predicted that some publishers may go out of business as the result of the change:

Moving from an advertising-focused model to one that relies on reader subscriptions may be the prudent move, but getting from point A to point B could be difficult, and some companies may not be able to make the transition. For them, Facebook’s latest algorithm could be what Mother Jones Senior Editor Ben Dreyfuss called “an extinction-level event.”

There’s no question that a decreased emphasis on news may make life easier for Zuckerberg and company. Facebook’s fecklessness in the “fake news” wars has damaged the company’s reputation, and eschewing journalism, fake or otherwise, in favor of heartwarming family updates is, as Benton noted, more in keeping with Zuckerberg’s original vision.

Yet I can’t help but be concerned that this is one more blow that the news business doesn’t need. Maybe the solution is to develop a news product for legitimate publishers that would be separate from the news feed. That would require Facebook to hire journalists and make editorial judgments. But it could also be a contribution to democracy — an idea that Zuckerberg often pays lip service to with very little in the way of action to back it up.

Talk about this post on (wait for it) Facebook.