Canada joined the U.S. and the European Union in prohibiting the social media app on government-issued devices. Other Canadian jurisdictions and institutions are considering similar bans.

Mastodon, a decentralized microblogging site named after an extinct type of mammoth, recorded 120,000 new users in the four days following billionaire Elon Musk’s acquisition of Twitter, its German founder Eugen Rochko tells TIME. Many of them were Twitter users seeking a new place to call their online home.