Amazon is offering a new PPC (price per click) program for authors whose books are in the Kindle Direct Publishing Select program. KDP Select is a program offering perks to authors in exchange for them publishing their digital books exclusively through Kindle. It seems this new advertising program is currently being split tested and the reception has been split as well.
Many authors are finding this new advertising program confusing. Questions have been raised as to how pricing works and just where the ads will appear.
from Blogger http://evangelinagius.blogspot.com/2015/02/amazon-launches-ppc-ads-for-authors_10.html