I know I can click on the activity tab of my profile to see all the comments, questions, and answers I've posted. I also know that I can click on the responses tab to see all the comments on questions or answers that I've posted.
However, when I post a comment on someone else's question or answer, I can't seem to find a way to be informed. The only way I've been doing it is by returning to the question every once in a while.
Am I missing something? If not, and there is no way of being informed when someone else posts a comment on a question or answer I've posted on, I think it might be a useful addition. Something akin to subscribing to the question.