European startup Natural Cycles -- maker of what is calls a “digital contraceptive” -- just raised another $30 million in funding. Regarding the company, TechCrunch writes: “Their subscription product, which now has 500,000+ users across ~160 countries, is a fertility tracking app fed by algorithms working off of individual data inputs, including daily temperature measurements via a body basal thermometer.”

YouTube says it’s in the process of implementing a new policy that age restricts inappropriate content, The Verge writes. “YouTube says that it’s been formulating this new policy for a while, and that it’s not rolling it out in direct response to the recent coverage,” The Verge writes. “Earlier this week, a report in The New York Times and a blog post on Medium drew a lot of attention to a world of strange and sometimes disturbing videos on YouTube aimed at young children.”

Twitter is now giving users the option of longer display name. “You were previously limited to 20 characters, but now you have 50 to work with,” The Next Web’s Napier Lopez reports. “This is only for your display name, not your @user name,” he points out. Along with more creative freedom, “I’m sure it’s also welcome for people who have actually have really long names,” Lopez suggests.

A Chinese media startup named Jinri Toutiao has reportedly agreed to buy Musical.ly for around $800 million. As Recode explains, the app “lets teens make videos of themselves lip-syncing.” Regarding the deal, Recode writes: “It’s indicative of the astonishing trajectory a hit app can enjoy, fueled by a worldwide population of mobile phone owners.” Also of note, “It’s the first Chinese-bred social app to enjoy real success in the U.S.”

Every quarter, Facebook is reportedly taking hundreds of thousands of ad dollars from Chinese state media agencies to help spread positive messages about the country. “Outside its borders China uses [Facebook] to spread state-produced propaganda around the world, including the United States,” The New York Times reports. “China’s propaganda efforts are in the spotlight with President Trump visiting the country.”

Warby Parker’s app is using the face-mapping feature in the new iPhone X to recommend particular styles of glasses. “It’s a step beyond the digital try on system the company has previously offered, where it would try to place a virtual pair of glasses on a picture to let you see how it looks,” The Verge reports.

Apple is expanding its “Everyone Can Code” program to more than 20 colleges and universities around the world. “All participating schools will offer Apple’s App Development with Swift Curriculum, which is a full-year coding course designed by Apple engineers and educators,” MacRumors reports. “The course aims to teach students how to code and design apps for the App Store, and it is open to students of all levels and backgrounds.”

Sean Parker has become very critical of the company he co-founded. Regarding Facebook, he tells Axios’ Mike Allen: “It literally changes your relationship with society, with each other ... It probably interferes with productivity in weird ways. God only knows what it's doing to our children's brains.” Parker describes Facebook as “a social-validation feedback loop ... exactly the kind of thing that a hacker like myself would come up with, because you're exploiting a vulnerability in human psychology.”

While passing some of the blame onto Russian agents, Marissa Mayer apologized for Yahoo’s gigantic data breaches during her tenure as CEO of the tech giant. At a Senate Commerce Committee hearing on Wednesday, Mayer testified along with interim and former CEO of Equifax and a senior Verizon Communications executive, Reuters reports. “I want to sincerely apologize to each and every one of our users,” Mayer said.

In some regions, Facebook is taking an odd approach to curbing revenge porn. “Facebook is asking users to send the company their nude photos in an effort to tackle revenge porn, in an attempt to give some control back to victims of this type of abuse,” The Guardian reports. “Individuals who have shared intimate, nude or sexual images with partners and are worried that the partner (or ex-partner) might distribute them without their consent can use Messenger to send the images to be 'hashed.’”