As suggested in the title, I believe that it would be nice to have an area of the bugtracker that lists reports that you have commented on, in a similar fashion to the "My Reports" page or the forum's post history. While this isn't completely necessary, as someone who tries to actively contribute to discussions about bugs on the bugtracker, I find it to be a bit of a hassle to try to remember all of the reports that I've commented on in order to keep up with any updates or further discussion, especially on reports made by other people.