Hi friends !
Amazon Bestsellers is the grand-daddy of tools for finding niche marketing ideas. At the top of the page you'll four amazingly helpful links: New Hot Releases, Most Gifted, Most Wished For and Movers & Shakers. Scroll down and you'll find all of Amazon's product categories. Click on any of them. For example, click on Watches at the bottom. You'll find a huge list of popular watches within the watch category. Scan down these product lists and you'll be sure to find a terrific affiliate marketing niche.