This seems as good an article as any to mention
www.slashfood.com, a cool website that discussed cool foods.
Stevia is not a sweetener that is approved for use by the FDA. It is actually classified as a dietary supplement, an herb, that happens to be sweeter than sugar and can be - and is - used as a sweetener. It is all natural, has no calories (or carbs) and is getting more and more popular, though it makes up only a small portion of the non-sugar sweetener market.