Less of a network effect than Facebook, I would think, because most users of Pinterest are pure content consumers, rather than hybrid content producers/consumer

Less of a network effect than Facebook, I would think, because most users of Pinterest are pure content consumers, rather than hybrid content producers/consumers. That said, they have a very large library of existing content, a large number of producers who have devoted a fairly large amount of time to Pinterest, and also... a space in which it would be hard to distinguish yourself by pure feature competition. How do you make a website that is substantially better than Pinterest at showing pictures and letting people bookmark them? If you create incrementally better search/recommendation technology, I think it would be hard to communicate your tech advantage to the average user, particularly before you develop a deep content library.