Recent quotes:

Seth's Blog: Understanding the backlist (for everything, including books)

The backlist is the stuff you sell long after you've forgotten all the drama that went into making it. Book publishers make more than 90% of their profit from books they published more than six months ago. And yet they put 2% of their effort into promoting and selling those books. Editors, agents, salespeople all focus on what's new, instead of what works.