I've found flour/cornmeal to be too messy...but that was before my dough was worth a damn.
For now, I stick with spraying some parchment paper, form the dough and finish assembling the pizza, and use a peel to put the pizza (paper and all) on the stone. After about 5 minutes the bottom crust is cooked enough to slide the paper out from underneath it. Use the peel to take it out and you're golden (and so is the crust).
Can't remember who, but someone suggested that method several months ago on this thread. Been using it ever since