Nice vid and good idea for post.
I concur with the others here, if you're not doing it, you're cheating yourself and wasting some cash. I make concentrated effort on doing it at least once in each 1/3 of the cigar. I agree with
akumushi on doing it with a nice little amount of smoke. Check the machismo at the door, no need for dragon puffing (although it looks pretty sweet). For me, it's akin to when sampling/tasting wine with the mouth swish and air draw across the palate. Only want to do it a couple of times to wake the senses up (plus doing it too much kills the experience and overloads the sample). I also try to concentrate on doing it after a liberal/hearty puff, release some of the initial smoke through the mouth, then close and retro the remainder. Little cooler smoke and I feel the aromas have then been fully oxygenated and opened up for full effect.
I also have seen some review vids. by some on the Internet and for me if they don't retro during the review...