When you publish your book on Amazon, you are given seven spaces for keywords. Notice that I didn’t say seven keywords, I said spaces. You can put more than one keyword in those spaces. There are some things we don’t know about these keyword boxes, and some things that are frequently changed. But let’s start with the things we do know, that have been fairly constant for the last five years. If you only put one keyword in a box, it is given slightly more weight than if you pack in as many keywords as possible. You get fifty characters…