It's ReadWriteWeb Day at Mattishness. A post about Amazon PPC ads just sparked my thinking, and now it's a post about Pubmatic - about which I have something at least not completely valueless to say, which I initially posted in the RWW comments:
"this is a solid idea because many more-sophisticated websites have been building this exact type of ad-toggling system in house and it is valuable - so pubmatic extracting and productizing the functionality is a good idea that is similar to the behavioral targeting providers like A.K. that have sprung up to offer Amazon like personalization to other web retailers."
So there you have it! Every good writer knows that one essential key to success is 'write once, sell twice' and that is advice that I want to take to heart.