I'm failing to understand why can't people simply type four letters just to let the ninja know they need it. It's not like the bard songs, it has a three minute cooldown. I have no way at all to know if the tank needs TP or not and I'm not about to go like "He has done (enter skill here this many times) so I *think* it would be a good time to use it...)". Just simply ask for it, it's not going to kill you.