I'm using Long Tail Pro (Platinum Version). I found a keyword for an ebook that will be sold on amazon, but people confuse the hell out of me. Some tell me only worry about the KC since i'm just selling on amazon. They tell me, Anything under 50 is great keyword that i should go after it if it has the traffic. Then i'm told that's all wrong, that i must do it this way and that way, stand on my head and spin around in my chair.. Each post i read on the topic is all different.