I think this effect may only be successful in very specific cases of certain genres. For example An Awesome Book (http://veryawesomeworld.com/ http://veryaweso

I think this effect may only be successful in very specific cases of certain genres. For example An Awesome Book (http://veryawesomeworld.com/ http://veryawesomeworld.com/), a similar adult/everyone children's book is offered for free and in full on the website while still quickly selling out on Amazon.