Please recommend powerful tools for Amazon Kindle niche research
My question is, this is a hassle to do manually using Kindle's auto suggest system, are there any tools preferably free that you use to find hot niches on Kindle?
Here's the second part of my question. You may be able to find rough ideas regarding a hot niche, but is there another tool or a set of tools that you can use to cross-reference potential demand?
Again, if there are any free tools, mention that first. But I'm serious enough about Kindle publishing thatyes, I am willing to spend money on an online tool. It just has to be very good.