Press the magic button labelled publish in the Amazon Kindle store or other self-publishing outlet of your choice. People will purchase your book and the reviews will come flooding in, won’t they? Well unless you are incredibly fortunate the answer is no they won’t. Even if your book receives a steady stream of downloads only a small number of readers (if any) will take the time to pen a review. This is the case, in my experience even when readers enjoyed your book. To take a case in point, two friends downloaded my story, Samantha, (http://www.amazon.co.uk/Samantha-K-Morris-ebook/dp/B00BL3CNHI). Both told me how much they enjoyed reading my book and indicated they would review it without any prompting from me. Neither have done so and not wishing to nag friends I haven’t pursued the matter. So, in the case of Samantha 2 people who derived pleasure from it haven’t left a review which does, I believe prove my point regarding the difficulty of obtaining reviews which, if positive will help in selling your book. So how can the author obtain reviews?
I have obtained several reviews by offering my books free via KDP Select, (https://kdp.amazon.com/select), an Amazon programme which allows authors to promote their work free or at a reduced price for upto 5 days in any 90 day period provided the books in question are exclusive to Amazon. A number of those who downloaded my titles left reviews which shows that KDP Select can help in promoting your writing.
Another way in which to promote your books is via your own blog. Mentioning that you are running a free promotion on Amazon or other platform can encourage your followers and visitors to download and, hopefully review your books. A word of caution. Don’t fill your site with posts promoting your books as this will turn many people off. Write about topics other than your books. be generous in supporting other authors via guest posting opportunities and your site is more likely to thrive and attract followers some of whom will read and review your books.
Contacting book bloggers can also result in reviews. Read their review policy (if they have one) prior to getting in touch. If you write romantic fiction and a book blogger only reviews the crime genre there is no point in contacting the blogger (it being a waste of their time and yours).
The overwhelming majority of book bloggers will review your book free which is, in my view as it should be. Most authors would never dream of paying for a review. However, for the small number of writers who might be tempted to do so, they should consider this. If you pay for a review then the perception will exist (assuming it is positive and you are found to have paid) that the review is not honest (I.E. you paid for a good review). While there may be sites who write unbiased reviews in exchange for cash mud sticks and even if the review is 100 percent honest your reputation will be tarnished. People will question all your reviews irrespective of whether they where given freely or otherwise.
In conclusion relying on Amazon to generate reviews is the most uncertain method of gaining them. The use of your own blog or other social media to promote your books coupled with contacting book bloggers asking that they please write an honest review of your work, is the best method.
Finally a huge thank you to all of my readers who have taken the time to write a review or who have promised to do so. I very much appreciate you taking the time to read and review my books.
In his poem, “In Memory of W. B Yeats” the poet, W. H. Auden writes “For poetry makes nothing happen”. Auden is, I believe broadly correct. It is social and economic factors, for example widespread starvation which led to the French Revolution of 1789, rather than the writings of philosophers and poets. One can not, however dismiss the role writers play in shaping history. George Orwell was regarded as being a threat to the old Soviet Union (the Communist Party banned his writings along with other critics of Communism). Authors such as Orwell and Kafka did not bring down the Berlin Wall. They did, however help to expose it’s flaws and influenced those intellectuals brave enough to criticise the authoritarian governments under which they lived. 
K Morris - Poet 