X Tweaks Algorithm to Prioritize Posts From Mutual Followers

Executive Briefing

• Reveals mutual-follower relationship data was missing from X's ranking algorithm, reducing friends' visibility in replies
• Boosts post visibility among mutuals so familiar accounts surface more easily amid replies from strangers
• Exposes tension between engagement-optimized AI and genuine social connection, as hostile reactions still register as activity
• Notes X's published algorithm already contained mutual-follow graph tools, raising questions about why the gap existed
• Cautions that the boost's strength and success metrics remain undisclosed, leaving real-world impact uncertain