Okay, perhaps not for communication but for injury prevention and my own personal rehap....it is the best.
I did look at the general instructions initially and through trial and error I have found my own trigger points and sometimes it hurts so good! This is when I know I need to keep foam rolling!
My problem child is my left piriformis muscle and although I seem to be doing okay with it and the foam roller, I always am looking for ways to be more effective. I have found a good video demonstrating good form for using the foam roller for your piriformis muscle. I tried his tips and it made a huge difference in a quicker release --- and isn't that what we are after?