My name is Eugen Rochko and I’m the creator of Mastodon, a free, open-source federated social network server. The flagship instance mastodon.social has over 22,000 users and is growing fast. You can check it out here. Very early on in the development of Mastodon I’ve decided that centralization and unexpected algorithmic changes were not the only one of Twitter’s problems. Harrassment and tools to deal with it have always been lacking on Twitter’s end.