In trying to launch a cryptocurrency and digital wallet for Meta-nee-Facebook, former PayPal president David Marcus has been largely thwarted by vociferous opposition from regulators around the world. More power to them.

Monica Tailor, the newly appointed global director of social practice McCann Live, shares her blueprint for expanding the social network.

Are people using more social media because they are lonely? Or do they get lonelier and more anxious when they see curated bios of others?

"People who've opted in will no longer be automatically recognized in photos and videos," AI vice president Jerome Pesenti said in a blog post.