I’ve shared a few posts about how important reviews are to the success of authors. The bottom line, of course, is that no one will read a book that no one (or too few) have read.
In other words, The Review is like a front page news headline informing the world that you have read the book, that you enjoyed it (or not), why you do/n’t and whether or not you would suggest it to others.
An important thing to remember is that, even if you didn’t particularly enjoy the book, whether for reasons of subject matter, writing style or poor design or editing, your opinion may influence another reader who is looking for that genre/style, or convince an amateur writer that s/he needs to pull and “fix” the book or hone his/her craft before attempting to publish again.
Here’s one explanation of the value of reviews:
“…Reasons to Love Reviews
The…reason to love reviews is that the more reviews you get on Amazon the more visible your book comme.
This is largely due to the Amazon algorithm which is based on a few things, one of which is the number of reviews you get to your page. It’s called Social Proof and Amazon loves it.
More reviews on your page push your book higher in search ranking when someone enters your book’s search term into the Amazon search bar.”
So, although profit is nice, exposure is crucial and reviews make both possible!