You can help your favorite authors out even after you've bought their books. Jon Mollison over at Seagull Rising explains how:
One of the easiest, cheapest and fastest ways to show your support for an author is to write an Amazon review. The algorithms that operate in the substrate of that website use the reviews a book has to determine how strongly it sells that book to random shoppers. As a result, even a few reviews helps push the sales of a book, and push it up in the rankings. The best part is that reviews are permanent fixtures, so they continue to operate, whereas sales represent a short term bump.
To that end, I'm calling for a review bomb. Here's how it works: On March 3, write three sentences to describe three books.
Choose three titles off the list of books you've read. Spread the word, boost the signal for your favorite authors, particularly the smaller independent authors and those who are Pulp Revolution friendly.
It sounds simple, but it will have a big impact. So spread the word: Three for three on 3/3.Join Three for Three today, and post three reviews for your favorite authors today.