There are numerous Topics across many categories on X to follow. We’re working hard to add new Topics all the time. How do we choose which Topics to offer? They’re based on the volume and health of conversations happening on X. For volume, we look at how much people are posting, Reposting, replying, and liking posts about that Topic.
We want Topics on X to reflect the broader, lasting conversations people have about the events, people, and things they discuss. So we use machine learning to find related posts from these conversations. This could mean they post a lot about the Topic or interact a lot with posts about the Topic. From there, we find the posts that are most interesting to those people, using algorithms, keywords, and additional signals.
We’ve implemented a number of protections to help keep conversations included in a Topic healthy and free from abuse — including working to not recommend posts for a Topic if the engagement is manipulated or spammy.