Brazil's ban on X has led to a surge in user registrations on Bluesky, a decentralized social media platform, with over 500,000 new users in the last two days. Mastodon, another alternative social network, has also seen an increase in sign-ups from Brazil. The ban was imposed by a Supreme Court justice, and X's refusal to comply with censorship requests may have contributed to the ban. Bluesky's developer has warned of potential outages and performance issues due to the increased traffic.