https://techcrunch.com/2019/03/14/telegram-gets-3m-new-signups-during-facebook-apps-outage/

Messaging platform Telegram claims to have had a surge in signups during a period of downtime for Facebook’s rival messaging services.

In a message sent to his Telegram channel, founder Pavel Durov’s just wrote: “I see 3 million new users signed up for Telegram within the last 24 hours.”