X's open-source algo gives mutual-follower replies a +15 weight boost, 5→20
mark_k · x · 2026-10-28
markk breaks down a ranking tweak in X's open-source algorithm: replies between mutual followers get a +15 lift in predicted reply weight (5→20), while normal replies stay at 5. His advice: follow back people in your niche who already reply to you — two-way follows now drive better distribution than one-way follower counts.
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