It is kind of like the owl and the lollie-pop, how many licks does it take to get to the center. I know people that have revegged, or reverted.... Tomatoe, tomahtoe.. we all know what each other means. I side with BigJay here though.. WHY do it, you get less yeild each time you do it, so clone and grow...
But then again, I can see one reason why to do it... someone who has grown one plant to maturity, and does not want to grow anymore, but would like a little more bud. Still confuses me, but I could see it.