And such a service could give Facebook a whole new avenue for growing its advertising business, said Ali Mogharabi, an analyst with Morningstar Investment Service. He said he sees Groups as essential to Facebook's vision and wants to empower Group leaders with tools to more effectively lead their communities.
Tech companies are under intense scrutiny about how they protect customer data after Facebook was embroiled in a huge scandal where millions of users' data were improperly accessed by a political consultancy.
In the letter, Damian Collins, Chairman of the Digital, Culture, Media and Sport Committee, said Zuckerberg can either go there voluntarily by May 24, or officials will issue a summons.More news: Not wave, there is BJP storm in K'taka: PM Modi
The announcement comes on the heels of Bumble's high-profile departure from Facebook, as the dating service removed its previous Facebook profile requirement after some users cited issues with the direction Facebook has been heading lately. The app is still in development, so there's no release date yet.
Although Facebook Spaces hasn't caught on like wildfire, we have seen some interesting uses for it. Conundrums, the VR talk show by Slate, depicts host Lindsey Weber interviewing people like Wyclef Jean and Cipha Sounds in virtual reality.
Equally interesting will be how Match Group responds to Facebook's move.
Facebook's massive developer conference kicked off Tuesday, but the event's website lagged behind.
Officials in the United Kingdom and USA have opened inquiries into Facebook and its privacy policies after it was revealed in March that Cambridge Analytica, a British-based political consulting firm, had amassed the personal information of 87 million Facebook users without their permission.
Zuckerberg commented on Koum's post: "I'm grateful for everything you've done to help connect the world, and for everything you've taught me, including about encryption and its ability to take power from centralized systems and put it back in people's hands". "It's something privacy advocates have been asking for - and we will work with them to make sure we get it right".