Unless you enjoy constant bestsellerdom you are, like the rest of us, sweating bullets during the monthly check of sales numbers. Between the deluge of free books and the competition to secure ad slots on sites like BookBub,gaining the attention of readers isn’t getting easier.

Kindle Worlds isn’t a silver bullet. In 2015 silver bullets don’t exist, although hard work, the production of excellent stories and sound marketing practices go a long way. But the KW program does have obvious benefit...