This thread died, but it would truly be a great function! We have it on a norwegian football forum, it isn't annoying at all. Why? Because there aren't notifications. In the "User Menu" right beside UserCP, there's an option called "Last answers to my posts". If I press it, I can see a list of the last twenty times I've been quoted. Those who don't want this function don't need to check there. Not annoying whatsoever.