It's just another way of getting your probiotics along with fermented veggies and kombucha "scoobies."
Very primal, good for the gut, and definitely healthy.
Would I call it a miracle cure? No way. But as living primally has taught me, the idea of "super foods" and miracle cures are absolutely ridiculous. Focus on eating healthy, natural, and real foods. I would also add to that that you should make sure a portion of your foods are "living foods" meaning that they provide your body with the beneficial living organisms it needs to be healthy. This definitely qualifies as a living food.