I disagree with PG entirely. These lists are thoughtful, but they are 100% subjective. The only rule with startups is there are no rules. There is a time and a

I disagree with PG entirely. These lists are thoughtful, but they are 100% subjective. The only rule with startups is there are no rules. There is a time and a place for EVERYTHING. There is no "always," and there is no "never." I have a funded startup. I can list 5 counter-rules for every rule he lists. For example: "Don’t build something that already exists. Customers won’t buy it just because it’s yours." Living Social, anyone? The phrase, "There is more than one way to skin a cat" comes to mind.