>> Facebook, the world's largest social network, is shaking things up, and investors aren't feeling friendly about the changes. Shares tumbled more than 5% at their lowest point Friday. Under fire for failing to prevent Russian operatives from meddling in the 2016 US election campaign, and for spreading propaganda in other parts of the world, Facebook CEO Mark Zuckerberg announced the network will tweak what users see.
Reuters San Francisco correspondent David Ingram.>> The newsfeed is going to be altered in some way so that we all see fewer posts from publishers, from brands, from celebrities and more posts from our friends that we wanna comment on.>> In the past, Facebook's complex algorithm featured material that it thought would generate the most views and the most reactions.
Those views, or eyeballs are precious to Facebook's advertisers who are willing to pay to have access to the network's more than two billion global users. The scale of which has helped Facebook dominate the market for online ads, along with Alphabet's Google.>> If people are scrolling through the newsfeed less and they're spending more time commenting and debating with friends, almost like a messageboard on Facebook, they're going to probably be potentially seeing fewer ads.
Zuckerberg did give a little bit of a warning shot to investors in his note, where he said that in the short term, people may be spending less time on Facebook or that some of the engagement measures will be going down.>> That could be troubling for media companies specifically, because they have adopted by giving content away for free on Facebook in exchange for access to a wider audience, which may now become smaller.