4 - They don't seem to mind honest criticism. I'm currently reading a draft of a forthcoming Google book, and was amused to find that it includes an email that I sent back in 2000 trashing our then most recent product launch. It's painful for me to not tell people what I think, so for the most part I try to find people who don't mind hearing the truth (or my take on it, rather). Much of my interaction with startups consists of me telling them everything that I don't like about their product (and then they thank me!). I've worked for a lot of different companies, and Google was the only one where me speaking my mind never seemed to cause a problem. I'm not claiming that I'm always right, because obviously I'm not, but systems (or individuals) that don't welcome negative feedback are doomed. Cultures that don't laugh at themselves are cults.