Hi there, I've recently come across pubmatic and was wondering if anyone here has used it before? At first glance, they have decent ajax interface for you to easily create ads, manage zones, etc. What I am trying to do is: 1) Create a auto-blogging site and choose non-major adsen*se alternative (in order to not get banned from ones that pay high) 2) Measure success and CTR with different ad providers. Was wondering if they were 100% free ? Also if you have had any good or bad experiences with them, please feel free to share them. It will be much appreciated !