Occasionally, I discover that the answers to a question turns into an off-topic discussion (not "off topic" to the M.Y. rules, but off topic of focusing on answering the question). Usually, it becomes a "chat" between 2 or 3 people. In short, it seems like a lot of "noise" to the point where you may as well delete the whole question, itself because of the "noise".
Here's an example of this question that I recently posted. The comments start becoming a discussion on the use of rice matzah, which is somewhat answering the question, at least at the beginning. Then, the discussion seems to become "chatty".