Hey Mark,
good point. However the solution is not very trivial. This exact problem is on my LumberJocks to-do list and will be definitelly solved in the future. Basically there are few alternative ways to make this work. Simple email notification can result in huge amount of emails if you’ll be actively participating in more discussions.
I’m also thinking about some kind of conversation tracker that would be accessible through Your Account pages. This tool would allow you to see which discussions (projects or topics) have been active since your last participation in them.
I’m always trying to keep things simple. I believe that current email notifications system is great start and once I deal with the higher priority issues I will focus on this problem.
If you have any ideas how this Comments to Comments tracking should work, just share. This site is for you ;)
-- Martin, http://lumberjocks.com | My Facebook: http://profile.to/msojka