If you use Threads, you’ve probably seen topic tags, which users can add to posts when they want to reach more people interested in that same subject. Today, Meta is combining topic tags with its custom feeds feature, and rolling out communities as a worldwide beta. 100+ communities now availableSince Threads came out, users have been referring to “book Threads,” or “TV threads” as a way to describe topic-based groups. Now, Threads is embracing this naming trend with communities, which are public feeds of interest-based topics. Threads also plans to expand the post ranking feature beyond communities, bringing it to the For You feed.