I just love this idea of using, especially in terms of food, using that common sense. If you follow that - it's hard to talk about it without sounding like some New Age idiot, which I think is a bit unfair - but, if you do follow that natural cycle, you will inevitably eat better, cheaper, and much, much, much, much healthier.
Twitter, Reddit, Tumblr, Instagram, all these companies are businesses first, but, as a close second, they're demographers of unprecedented reach, thoroughness, and importance. Practically as an accident, digital data can now show us how we fight, how we love, how we age, who we are, and how we're changing. All we have to do is look.