Facebook is taking another step to try to make itself more socially beneficial, saying it will boost news sources that its users rate as trustworthy in surveys.

In a blog post and a Facebook post from chief executive Mark Zuckerberg today, the company said it is surveying users about their familiarity with and trust in news sources. That data will influence what others see in their news feeds.

It's the second major tweak to Facebook's algorithm announced this month, reports News.com.au.

The social media giant, a major source of news for users, has struggled to deal with an uproar over fake news and Russian-linked posts, meant to influence the 2016 US election, on its platform.

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The company has slowly acknowledged its role in that foreign interference.

Zuckerberg has said his goal for this year is to fix Facebook, whether by protecting against foreign interference and abuse or by making users feel better about how they spend time on Facebook.

Facebook announced last week that it would try to have users see fewer posts from publishers, businesses and celebrities, and more from friends and family.

Zuckerberg because of that, news posts will make up 4 per cent of the news feed, down from 5 per cent today.

Facebook announced last week that it would try to have users see fewer posts from publishers, businesses and celebrities, and more from friends and family. Photo / 123RF
Facebook announced last week that it would try to have users see fewer posts from publishers, businesses and celebrities, and more from friends and family. Photo / 123RF

Facebook says it will start prioritising news sources deemed trustworthy in the US and then internationally.

It says it has surveyed a "diverse and representative sample" of US users and next week it will begin testing prioritising the news sources deemed trustworthy. Publishers with lower scores may see a drop in their distribution across Facebook.

"There's too much sensationalism, misinformation and polarisation in the world today. Social media enables people to spread information faster than ever before, and if we don't specifically tackle these problems, then we end up amplifying them. That's why it's important that News Feed promotes high quality news that helps build a sense of common ground," Zuckerberg wrote.

Of course, there are worries that survey-takers will try to game the system, or that they just won't be able to differentiate between high-quality and low-quality news sources — an issue made evident by the spread of many fake-news items in the past few years.

David Chavern, chief executive of news media trade group News Media Alliance, said in a statement that Facebook's move is a positive one, but that it's not clear how effective this system will be in identifying trustworthy news sources.