For an indie author like myself Reviews are a vital part of being noticed so that the books can move up on the index of booksellers such as Amazon. When a book receives enough reviews they become recommended for reading.
Personally I spend thousands of dollars to produce a quality book and I have four to date. I have not recouped the cost of one book so far never mind any profit.

My books help people, I know this because of feedback from readers yet few people take the time to write a review or give the books a rating.

A review can be as little as one line, it doesn't have to be elaborate and if nothing comes to mind you can still rate the book with a star rating which takes one click of the mouse.

Indie authors don't have the backing of a traditional publishing house so we have to do all our own marketing and PR. Most of us are good at writing but not so good at marketing. Also we are all usually working on a shoe string budget so we can't afford elaborate marketing.

There are four things you can do to support indie authors, they are:
Buy a book
Review
Rate
Recommend

Please support indie authors like me 😀