What do Ghosts of Eden and Kotex have in common?

I posted a review of the novel Ghosts of Eden by Keith Deininger on my blog yesterday, November 20th. My practice is then to tweet the blog, post it on Facebook and Google plus. I also post the review on Amazon and Goodreads as a service to authors.
As you can see by the photo, I received an email from Amazon thanking me for my review of Kotex Natural Balance Light Pads. In addition, they post my review of Ghosts of Eden right next to the picture of the Kotex product.
Okay, this has to be user error on my part. I emailed Amazon but have yet to hear back from them. I hope Keith gets some good publicity out of this...