Lqt in it's default state spams our users to death. Each reply triggers an update by e-mail, and on busy pages this causes a lot of e-mail traffic. Not funny.
I think this is a (very) high priority issue. I would like it to work as I think the current enotif works - because I don't get that many e-mail through that system: don't send e-mails too often, or at least do not send more than 'n' e-mails between visits.