The X Algorithm ·
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PART ONE

HOW TO USE THIS BOOK

Chapter 1: What this book is for

This book explains five things. How a post on X reaches people. What can stop it from reaching them. How that reach turns into numbers. How those numbers get you into X's Original Content Rewards Program. And how to run an account so it gets there. It's written for people who have never read a line of code. The examples of what works come from live accounts, every post measured.

Every rule in this book comes from one of four places. First, X's own published code, all of it. Second, X's published rules, program terms, and help pages. Third, the real numbers from live accounts, every post measured with our own software through the X API. Most numbers in here are facts, read straight from X's code or your analytics. A few are estimates, like the date you'll reach 500,000 impressions, and those are labeled as estimates where they appear. Every rule carries the date it was read, because X changes them. And where X has kept part of its code private, the book says so rather than guessing at it.

How the book is organized

Part One is this introduction, the short version of the whole book, and the account types. Part Two explains how X decides what people see. Part Three explains what can limit a post or an account. Part Four explains every number X gives you. Part Five is the Original Content Rewards Program, rule by rule. Part Six is how to write posts that do well. Part Seven is how to grow followers. Part Eight is what to know if you use a posting tool. Part Nine is every advantage, in one list. Part Ten is the plan to get into the program, with dates. Part Eleven is what to do every month. Part Twelve is what to do when something breaks. The glossary and the full tables are at the back.

You can read it front to back, or jump. Each chapter stands on its own, and when a chapter depends on another it says so.

Remember

Four kinds of boxes appear through the book. Remember marks the thing to hold onto if you forget everything else in the chapter. Tip is a practical move you can make today. Warning is a way to hurt the account. Technical Stuff is for anybody who wants to see where a fact came from, and can be skipped.

Words used on every page

Post: anything you publish on X, including a reply.
Original post: a post that is not a reply to somebody else.
Impression: one time your post appears on somebody's screen.
Reply: a post somebody writes underneath your post.
Repost: somebody sharing your post to their followers as it is.
Quote: a repost with their own comment added.
Premium: X's paid subscription. Its tiers are Basic, Premium, and Premium+, listed in Chapter 3. A verified account is one with a checkmark, which the Premium and Premium+ tiers give and the Basic tier does not.
Feed: the "For You" list of posts X shows you when you open the app.

Chapter 2: The short version, how to post

This chapter is the whole book in five pages. Each line points to the chapter that explains it in full. If you read nothing else, read this.

The one idea

X does not show your post to all of your followers. X guesses which people are likely to do something with your post, and shows it to those people. The thing X wants most is a reply. Every rule below comes from that one fact. (Chapter 4)

What each thing is worth

When somebody sees your post, they can do things with it. They can like it, reply to it, repost it, send it to a friend, or hide it. X keeps score of those things. Each one is worth a set number of points. A like is worth 1 point. A reply is worth 10 points, because X wants replies most. Hiding your post, muting you, or reporting the post takes points away, shown below with a minus sign. The more points X expects your post to earn from a person, the higher your post appears in that person's feed.

What a viewer might doPointsWhat that means
Reply to your post10One reply is worth as much as 10 likes
Reply to your original post, when you follow each other40One reply from a mutual follower is worth 40 likes
Send your post to somebody by copying the link40One share by link is worth 40 likes
Quote your post10One quote is worth 10 likes
Follow you from the post8One follow is worth 8 likes
Repost2One repost is worth 2 likes
Like1The base unit
Open a link in your post0.4Less than half a like
Open a video0.1Almost nothing
Expand a photo0.1Almost nothing
Stop and read the post0.1Almost nothing
Tap "not interested"-86One tap cancels out 86 likes
Mute you-118One mute cancels out 118 likes
Report the post-468One report cancels out 468 likes

Two things to remember. A reply is worth ten likes, so a post that gets people to reply beats a post that gets people to like it. And the negative actions cost far more than the positive actions earn. A post that reaches the wrong people, who then hide it or mute you, does worse than a post that reaches nobody. (Chapter 6)

Before you post

Decide whether it will be a question or a statement. In the live accounts measured for this book, questions got three times as many impressions as statements. The best questions are not general survey questions. They ask about one exact thing that happened to the reader. A general question gets a "yes." An exact question gets the story, and the story is the reply. Two examples. A gym account: "What was the first lift you ever failed in front of other people?" A mechanic: "What's the noise your car made right before the most expensive repair of your life?" Chapter 23 has examples for seven more subjects. (Chapter 23)
Start the sentence with the reader, not the subject. "Has anybody ever…", "What did you…", "When did you first…". A post that starts with "Sourdough…" is about bread. A post that starts with "What did you…" is about the person reading it, and people answer questions about themselves.
Say one thing. One question, or one idea. Two questions get half-answers. Three ideas get none. (Chapter 24)
Make sure it can be answered in one sentence, because one sentence is what people will type on a phone.
Test it: picture the exact sentence a stranger would type underneath it. If you can picture that sentence, post it. If all you can picture is "yes," rewrite it.
If it's a statement, write the kind of thing somebody would send to one particular person. A reader thinking "that's my brother," "that's my boss," or "that's my gym" and sending your post to that person is a share by link, and a share by link is worth 40 likes.

The Do list

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