Entrepreneurs Everywhere: "A lot of people, intoxicated by Web 2.0 hype, are rushing to launch new ventures. Unfortunately, many of them are pursuing similar, and usually flimsy, business models. Rip suggests that all would-be entrepreneurs ask themselves two simple questions: 'How will you sustainably differentiate yourself? What will you do when 15 other similar sites appear in the next 12 months?' Don't assume, in other words, that low entry barriers make it easier to succeed. It's exactly the opposite. Where there are low entry barriers, there are also low barriers to competition." —Nick Carr