Felix Salmon has a couple great posts on the New York Times' paywall. He notes that it has been successful and explains why. Felix says: Yes, the NYT paywall is porous — but that’s a feature, not a bug. It allows anybody, anywhere, to read any NYT article they like. That makes the NYT open and inviting — and means that I continue to be very happy to link to NYT stories. I've been a fan and a propo