On March 31 Gaden made a medium post called “Welcome to Mastodon and the platform has really taken off. It’s been around for awhile, and at the time of writing the article, mas already had 25,000 users. But only 3 days after writing, the primary instance is at 36,000 and has overloaded the instance. If you want to join, you could make the service more federated (one of the purposes of this platform) by joining one of the other instances found here.