A MUST HAVE Plugin for any Blogger

I’m no newbie, but I only found this plugin a few weeks ago. OMG! I run 15 blogs and this plugin just makes it all so easy to manage ad placements. I want to dig in and learn the nitty-gritty on this plugin so that I can fully benefit from it. But already, it has made me some great Adsense. My guess is that this is the best plugin on the market today for WordPress. I have a lot of plugins, but none that I value as much as this one.