I noticed some new activity on this question that I had been commenting on. I checked my notifications and saw that I hadn't been notified about the latest activity. I had only been notified about the user's previous comment.
Then I noticed that the reason I wasn't notified about the most recent comment was because I wasn't tagged. My expectation was that I'd automatically be "following" so that I'd be notified about new comments even when I'm not tagged. Is there any way to achieve this functionality, either globally or on a question-by-question basis?