How the email titles currently works is "[Brickset] PersonsName commented on your bookmarked discussion" - the problem with this is that (in gmail at least) it groups the mails by person but not by thread - so every time someone comments I get a mail and I end up with loads of mails - I open one of them and of course read all the thread online.
Then I want to go back to my inbox and delete the notifications relating to the thread I just read - but where are they? Answer - theyre all over the place, so I have to open each one because (a) the title doesnt indicate which thread it is and (b) they are grouped in gmail by person not thread.
A better solution would be
"[Brickset] ThreadTitle - new comment"
This would mean (a) you dont have to open every mail to know whcih thread it relates to and
(b) the mails get grouped by thread in gmail