To them, your book should speak for itself. Really?
Do they breathe oxygen on their planet?
Are they aware how expensive advertisements are, even if they are online?
And that these ads are only visible for the time you ordered & paid them?
Reviews stay up on Amazon (usually - more on that later). Another thought:
The number of reviews influence the impact of your free days should you use
KDP SELECT or Goodreads --
When deciding whether or not to download a free book,
readers check to see how many reviews a free book has.
Other Amazon thoughts:
a.) As Amazon Prime Members tend to borrow rather $5.99 – $9.99 e-books,
raise the price of you book short before you join KDP Select.
To give away a $0.99 e-book for free or to offer it to borrow is a bit of a joke.
b.) Don’t use your promotional days on the weekend (especially Saturday)
because people are typically away from their computers
and spending time with their families on the weekend, especially holiday weekends.
Weekdays are generally better and
if you can have at least two days back-to-back
you will have more time to build momentum for your promotion.
More on Amazon and the reviews:
With all of the attention brought about by possible “fake” reviews,
a group of authors got together and sent a message to Amazon called
“No Sock Puppets Here Please”.
They claim that authors were misusing the review process
by using multiple accounts to leave good reviews for themselves.
Another reason could possibly also be the fact that Fiverr.com
has several offers from people who write book reviews for $5
(most likely without reading them…).
So now, Amazon removes reviews it considers suspect.
What can you do? Here are some more sources to find reviewers for your book: