I opened it and thought that pg would approve of the narrow column [0]. Then I looked who made it and saw that it's a founder of one of the best examples of YC (not just companies that are doing well but seem philosophically aligned with YC).

Edit: I was wrong, SeatGeek didn't go through YC. But the company is certainly well-liked around here, partly because of their open source: https://github.com/seatgeek/soulmate

[0] http://www.paulgraham.com/gfaq.html (last question)