Here's a look at some of the ways the company has changed the posts appearing in users' customized news feeds, which launched in 2006, as well as some of the factors it uses in deciding what makes up those feeds. Zuckerberg already signaled this would happen late past year, when he said the company's planned investments in preventing abuse would hurt profitability.
People are likely to see less content that comes directly from publishers, brands, and celebrities in their news feed, Brown wrote in the email.
A move to downplay the spread of media content on Facebook could also be a response to criticisms that Facebook has allowed "fake news" to spread on the platform. To that end, the company says it surveys tens of thousands of users each day to get a more complete picture of what people want to see.
News outlets have frequently used social media to drive traffic to their sites in recent years, but some Canadian organizations say Facebook is just one piece in an increasingly varied puzzle.
The development was hampering the basic idea which led to the building of Facebook which prompted the network to rethink its strategy and make relevant changes for "more meaningful social interactions".
While the changes could hurt Facebook's business in the short term, happier users could make for better profits over the long term.
CEO Mark Zuckerberg has been doing a bit of soul-searching about the negative effects his company may be having on society and its users' psyches. "On the other hand, passively reading articles or watching videos - even if they're entertaining or informative - may not be as good".
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Zuckerberg thinks the site will take a hit as a result, saying: "I expect the time people spend on Facebook and some measures of engagement will go down". Facebook makes the vast majority of its money from advertising and sponsored posts, after all.
The move to highlight posts that Facebook considers "meaningful" and reduce the emphasis on others could shrink the social media giant's role as a major news source for many people.
Facebook said that the changes will start rolling out within the next couple of months. But businesses that use Facebook to connect with their customers without paying for ads will also feel the pain.
"We built Facebook to help people stay connected and bring us closer together with the people that matter to us", he said.
The changes come after a tough year for Facebook that included congressional hearings on how Russian Federation used it to influence the 2016 US elections.
Zuckerberg, who took to Facebook to clarify why the amendments were justified, said, "One of our big focus areas for 2018 is making sure the time we all spend on Facebook is time well spent". Dotface's videos about a South Korean mother giving a hug to young sexual minority people who could not tell their parents about their sexual orientation struck a chord with viewers around the world, accruing 5 million views and many shares, comments and likes.