toot.FreedomWorkshop.com is a city connected to the Mastodon metropolis. Mastodon is a decentralised open source software that unites thousands of microblogs (called instances) into one big "federation". In other words, Mastodon is a "federated" microblogging platform; a metropolis with thousands of little cites (referred to as "instances"). Users can post 500-character status messages which can optionally include images, topic tags, and linked mentions of other users.