Block author — a NEGATIVE ranking signal
Predicted probability the viewer blocks you off this post. Blocks also remove you from that viewer's candidate pool permanently (author_socialgraph_filter.rs).
Last public weight: none — this head first appeared publicly in the 2026 release; no weight value has ever been published.
2026 weight: withheld (negative) — all current weights live in an
unpublished params module. The weights story →
What actually moves it
Aggressive reply-guy tactics and bait risk the one signal with a permanent tail: a block is forever-zero future distribution to that viewer.
Where it sits in the formula
Phoenix (a Grok-1-architecture transformer, phoenix/README.md)
predicts P(block_author) per viewer from that viewer’s own
engagement history — not from your post’s running like-count. The prediction is
multiplied by its weight and summed with the other 21 terms, then the
author-diversity decay and
out-of-network multiplier apply.
Related: Not interested · Mute author · Report · Not dwelled (scroll-past)