Most of it was directly out of the mag. I don't know what's worse, you copying it or the fact that I busted you. I tried it long ago, and it does help your squat. You really can get 20 reps because everyone is just too scared to really push themselves on the squat. I thought I could do 315 once or twice, but that turned into five and then in the next set I pumped out 15 and could probably have done 20.
Squats are the single most important exercise that anyone can do.
And yes, you can do a lot more reps than you think you can. The body can handle anything you throw its way. The only thing that stops you is your mind. This works with other exercises as well. Make sure you have a spotter though.