on The Book Designer:
Like so many other bloggers, I welcome relevant guest posts from authors and other experts who have something to say that will interest my readers.
I know that guest posts from authors help sell more of their books because of one simple trick: I use an Amazon Associates link for their book in their bio and in the post.
I don’t do this to earn money – the pennies will barely pay for my beloved tall, extra hot, skinny vanilla latte at Starbucks. I do it so I can see which topics resonate with my readers. When the writer’s book sells well, I know we’ve struck a chord. That tells me I need more content like that.
Chris The Story Reading Ape's Blog 