How I Use It
I use Poll Everywhere in large group settings and smaller tutorials as well. The added advantage is more in the larger setting.
I find I can modify the pace and difficulty of my teaching "on the fly" by assessing cohort understanding of the material as we go. This is perhaps the biggest advantage.
It is fairly easy to start, although for some the technology is daunting. I've written a long guide on getting started
which I hope people will find helpful.