Clubhouse (audio)
Audio-only social network — exploded in winter 2021 during COVID. Invite-only iOS triggered FOMO. Valued at $4B at peak, ~10M MAU since collapse.
Paul Davison + Rohan Seth founded 2020. Twitter/Meta/Spotify built clones within months (Spaces, Live Audio Rooms). Various racism incidents in early rooms. Pivoted to asynchronous "chat rooms" 2023 — too late. Lives on as a smaller niche tool.