That means you'll see fewer news items, and those that you do see will more likely be "trustworthy".
Mr Zuckerberg has also flagged it will continue to fight fake news by using member surveys to identify high-quality outlets and fight sensationalism and misinformation.
"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", he wrote. This change will only apply to United States users, although - if successful - Facebook plans to enforce the effort internationally. Additionally, content from news publishers and brands will be given less exposure on the news feed. It says it has surveyed a "diverse and representative sample" of U.S. users and next week it will begin testing prioritizing the news sources deemed trustworthy.
Facebook says it will start prioritizing news sources deemed trustworthy in the USA and then internationally.
Some of these changes include prioritising "trustworthy" news as well as cutting back on public posts that people see in their feeds.
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In its latest effort to solve fake news, Facebook is implementing a system in which users will be asked to complete surveys to determine the quality of news postings. "That's why it's important that News Feed promotes high quality news that helps build a sense of common ground".
"It is absolutely a positive move to start to try to separate the wheat from the chaff in terms of reputation and use brands as proxies for trust", Jason Kint, the chief executive of Digital Content Next, a trade group that represents entertainment and news organizations, told the The New York Times. "We started making changes in this direction previous year, but it will take months for this new focus to make its way through all our products".
The quality of news on Facebook has been called into question after alleged Russian operatives, for-profit spammers and others spread false reports on the site, including during the 2016 USA election campaign.
Neil Patel, publisher of conservative site Daily Caller, stated that, "For a company that wields this much power to make these kind of decisions with zero transparency really scares me", cited by the New York Times. The company chose to use community input to rank news sources in an attempt to be as objective as possible, Zuckerberg said. "Or we could ask you - the community - and have your feedback determine the ranking".
Zuckerberg says it struggled with how to decide what news sources are "broadly trusted" in a world with so much division and rather than make that decision itself, which he admits he's not comfortable with, it has handed the decision to is users.