70K signups in one day post-Twitter acquisition. Then a cliff. Users couldn't understand what a "server" was or what to do after signing up.
Core insight
Two drop-off points: choice paralysis at server selection and blank screens post-signup. Familiarity bias from Twitter made Mastodon's flow feel broken.
Solutions
Server suggestions by language + interest. Empty states, onboarding checklist, hashtag nudges. Push users to the Aha moment faster.