I would never have bought this myself...but my husband bought this for me knowing I am in constant pursuit of making pizza with a perfect crispy crust at home (and probably also so I would make him more pizza). I had to share in case anyone has been considering this product.
The technique advised is to roll out the dough onto a piece of parchment paper and then directly lift that onto the stone inside the oven. I have a spare 12" stone that I put under the parchment when rolling this out just so I make it the right size.
You then slide the pizza off the paper after it has set up. I always fumbled trying to slide pizzas onto a stone in my oven... To cut down on clean up, I have been putting plastic wrap over the top of the dough and then rolling it out to eliminate the need for flour.
It does only make 12" pizzas, so that might not be for everyone, but I am surprisingly happy with it! Thin pizzas are done in less than ten minutes and the bottom is perfectly crispy and the top is done well.
Sure, it's not a necessity and is just another gadget, but now that I have it, I will definitely use it.