Twitter Circle
Twitter feature 2022-2023: tweet only to a chosen group of max 150 followers. Clipped "close friends" concept from Instagram. Killed October 2023 by Musk-era X.
Use: niche jokes that don't work for full public audience, hot take about colleague, finsta-lite. Privacy fail issue: leaked screenshots from Circle became public drama (recipient screenshots and posts). Discontinuation reason: feature shipped too late, Musk-team pruning, or user base not large enough. Anti-Twitter platforms (Bluesky, Threads) have NOT implemented equivalent feature — close-friends function remains Instagram-exclusive among mainstream apps.