Three years ago, Communities was launched on Twitter as a competitor to Facebook Group. It is a more specific discussion room for certain topics and the discussion will be more neatly organized because it is not in the main timeline. Most recently, Threads will be present with more or less the same feature called Loops.
According to a report by Chris Messina via TechCrunch, users can join or leave Loops. Then there is a hidden code giving hints about the creation of Loops such as adding names, biographies and more. This feature is also in line with the concept of hashtags introduced by Threads, where in one sharing only one tag can be included to make it easier for users to find the same discussion topic.
TechCrunch notes that Meta has provided feedback on this feature and that it is still in the early stages of development. Loops is also still untested, including internally so its full features are still unclear. With the use of Threads growing, this feature will probably make the discussion of various topics in Threads more neat and pure.