frozen pizzas usually include cooking directions for putting it directly on the rack. so it's not too novel, but thanks for the nugget UrbanSpaceman.
In an ideal world, we'd all make our pizza from scratch, including the dough. Or, we'd only get pizza from the local independent pizza shop. But, we live a more hectic world, where time seems to be short, even though we have a plethora of things that supposedly help us save time. Frozen pizza cooks in about 25-35 mins. IF I buy my dough pre-made, the mozzarella, the tomato and the basil, I can throw a pizza together in under 10 minutes. By then, my oven and pizza stone is hot. 15-20 minutes later, the pizza is cooked. Total time is about the same. So, in reality, there's hardly a need for frozen pizza. A lot of the cooking time for the frozen pizza is simply thawing the thing.
On the other hand, with frozen pizza, there's no left over ingredients, clean up is a sinch, and there's no grating of cheese or kneeding dough - leaving more time to get other work done whilst the thing is cooking. work such as: checking email, posting on roadfood.com and seeing if one has anymore friends on myspace.com.
several frozen pizza's are better than Papa John's, Pizza Hut, Little Ceasar and the like - so if you live in an area where only chain pizza places deliver, the frozen pizza can be a better alternative. If cooking it directly on the rack improves the situation, I say, we should all know about it.