Bookings Holdings -- which operates Priceline.com, Kayak.com, and other travel sites -- just withdrew its membership from Facebook's so-called Libra Association.

The majority flunked a recent 10-question quiz on the digital landscape circulated by the Pew Research Center among nearly 4,300 U.S. adults.

The email addresses and phone numbers in question were supposed to help protect users' accounts using two-factor authentication and other security measures.

For one, several key financial services partners like Visa, Mastercard, PayPal Holding are now on the fence about formally signing onto Libra.

In audio surfaced by 'The Verge," Facebook's CEO says he's ready to rumble with anyone who challenges his company's massive market position.