While I agree with his point on structured procrastination - sometimes the most inspired work is done while avoiding something else - it's also important to balance that with focus. I find my focused procrastination valuable and my scattered procrastination frustrating. Procrastination is rarely productive when it means bouncing between four things (reading HN, hacking on a library, writing a blog post, and buying a book at Amazon).
Procrastinate in serial, not parallel.