How Do You Model Click Through Rates?

There's a behavior o mechanic, and that usually boils down to what you might call like a proxy of behavior or interest. The general shape of these things are that they fall off expedientially. Sometimes there is also no effect. I have seen cases where the bottom thing also has a little bump sominterest. Might have a colleague who called that the ramp. If if an ad gets shown, i'm in the first place, i'm rank one. If for some reason i'm below that on mike, two, three, four, all that's tract so we've got a lot of statistics and analytics.