You have no idea what just happened... Elon Musk just opensourced the X algorithm AGAIN. Here's everything you need to know about it: 1. For You is now basically a Grok-powered recommender 2. Groks predicts which posts you will like, reply, repost, click, dwell on, follow, mute, block, report 3. Out-of-network discovery is central (X heavily shows you posts from people you do not follow) 4. Your recent engagement history trains your feed fast 5. Negative feedback is explicit: not interested, block, mute, report, no dwell 6. X intentionally reduces same-author domination 7. Ads are blended into “safe gaps” with brand-safety logic 8. Grox adds spam, safety, policy, reply-ranking, embeddings, and content understanding 9. Topics and embeddings matter a lot (If your post clearly fits a topic, it is easier to recommend) 10. Strong posts can escape your follower graph if the model predicts engagement The simple creator takeaway: Don’t optimize for impressions. Optimize for high-intent behavior: replies, reposts, shares, follows, profile clicks, dwell, and video quality views. And avoid creating posts people instantly mute, block, skip, or mark not interested.