90% of the groups I'm in no one ever takes teamwork feats. 
Only way I've been able to use them is building a character to work with my main.. through a familar or leadership if a GM allows.
I built a Butterfly Sting/Seize the Moment/Wild flanking Inspired Blade.. (set up artist)
With a Two-handed Warrior Power attack/Seize the Moment/Wild Flanking fighter hitting for over 200 damage with a 4x weapon
an this is at lvl 9 .. why dont people like Teamwork feats?