How do you build a thriving online community? One human connection at a time. Caterina Fake is the host of our spinoff series "Should This Exist?” and she knows: Whatever you are when you're SMALL — gets amplified as you grow. So if you're building any kind of community (e-commerce, crowd-funding, social media), emphasize the human, and be careful what you cultivate. Caterina cofounded the pioneering photo site Flickr and helped build companies like Etsy, Kickstarter, Stack Overflow, and even Blue Bottle Coffee from their beginnings. Her wise words for every founder: You have has a responsibility to shape the community from day one -- because the tone you set is the tone you’re going to keep, even as you go viral.