The five most important things you need to know about the @x algorithm: 1. X tests each post with a small group of users, scores it based on early engagement (especially replies and saves), then expands or limits its reach accordingly. 2. Replies and "reply-to-reply" interactions provide the highest reach boosts. 3. Premium subscribers receive a major boost, while multimedia and trending topics offer additional visibility. 4. User reports and blocks/mutes severely damage your account's standing. 5. Original, thoughtful posts that offer a clear perspective, feel complete, and align closely with your audience’s interests are more likely to perform well and reach the right people.