This is a great post by Ajay from his days at Trilogy. Trilogy was one of the first companies to pioneer aggressive college recruiting for startups, and these are some of the lessons he has learned from those experiences. Startups should not be afraid to hire "kids" - sometimes it can actually be a huge advantage!
Great post by Sahil (not me). In the consumer world, I fundamentally believe if you can solve a problem for a community, you will more easily reach product / market fit. Too often consumer apps go for the home run up front, but in the best situations, consumer sites have been built for a select audience, and then have organically grown. Facebook is a classic example - it started out as a dating site for Harvard, it resonated, then it grew naturally.