Facebook’s day-long outage is by far its longest and most extreme in years. At around 9 a.m. PDT on the U.S. West Coast — where the social giant is headquartered — Facebook, WhatsApp, Instagram and Facebook Messenger seemed to vanish from the internet. The outage continued through market close, with the company’s stock dropping around … Continue reading Facebook, WhatsApp and Instagram are slowly returning. Why did they disappear to begin with?