Facebook is now rolling out a dark mode to Messenger users

as declared in Facebook has been overhauling its Messenger app recently, slimming it down to focus more on chat, and promised that it would eventually roll out a dark mode for users. That mode is now rolling out, but there's a tongue-in-cheek trick you need to do in order to activate it: you have to moon someone. The trick, spotted by Android Police, 9to5Mac, and others, is simple: send someone (or yourself) a crescent moon emoji ( ). Once you do so, a shower of moons appears in the chat window, and you'll get a prompt to activate the mode in settings. Go to your profile page in the app, and it'll present you with an option to turn the mode on.

U.S. users are leaving Facebook by the millions, Edison Research says

New numbers from Edison Research show an an estimated 15 million fewer users in the United States compared to 2017. Marketplace Tech got a first look at Edison's latest social media research. Marketplace's Kimberly Adams talked with Larry Rosin, president of Edison Research. Courtesy of Edison Research and Triton DigitalAdams: But if we look at Facebook's earnings report, they are still reporting an increasing number of active users. Courtesy of Edison Research and Triton DigitalAdams: Do you have any sense as to why people are leaving Facebook in particular?

Facebook decided which users are interested in Nazis — and let advertisers target them directly

as declared in "Finely targeted digital advertising allows anonymous advertisers with who knows what political agenda to test messages that try to tap into some vulnerability and channel a grievance in some particular direction," said Anthony Nadler, a professor at Ursinus College in Pennsylvania who researches how social networks and ad platforms can assist radicalization and spread disinformation. "I imagine that the more sophisticated white supremacists out there are trying to figure out how to expand their base."

Facebook attacked over app that reveals period dates of its users

These included the Flo Period & Ovulation Tracker, which reportedly shared with Facebook when users were having their periods or when they were trying to become pregnant. Facebook said that it required apps to tell users what information was shared with it and that it "prohibits app developers from sending us sensitive data". Meanwhile documents posted online on Friday have raised further privacy questions. About 60 pages of unedited exhibits from a lawsuit between Facebook and Six4Three, an app developer, were posted anonymously on the GitHub site. In one email, former Facebook vice-president Michael Vernal appeared to discuss a serious issue with a third-party app.

collected by :Roy Mark