AMZ Watcher is a monitoring tool designed to help Amazon affiliates keep track of their links and the availability of products listed on Amazon. The service ensures that affiliates optimize their earnings by alerting them when products become unavailable or out of stock, or if a product link leads to a 404 page. This proactive tool also suggests alternative products, which affiliates can link to instead, enhancing the possibility of maintaining and increasing revenue. Additionally, AMZ Watcher checks for better-priced products on Amazon, allowing users to update their links to maximize their affiliate income. The website's features include bulk link importing, making it ideal for affiliates with numerous links to manage.