it's about time to learn it
I see some @Favs here and there, but they never reach my notification center.
in order to mention someone you need to enable scripts for the forum in your browser.
then, start typing the name eg @fa - there should be a popdown now.
click the name. if you post now the mention should be a link - if it's not linked to the profile, something went wrong and there's no notification.
use this thread to test