Hehh, I was expecting stuff like Science or Nature, or anything of that quality. Random "X funny facts about this and that" sites can write anything they want without peer review, but it is still a general principle in science that you don't put anything to mass production you haven't studied thoroughly enough beforehand. That means, scientist might not know how all probiotics work or what their exact purposes are, but then only the known ones will be used for yoghurts and other food.