Affiliate links are the special tracking links that make sure commissions are credited when someone makes a purchase. A broken link means the click does not work, or the tracking fails, which can result in lost earnings. This can happen if a company changes its website structure, discontinues a product, or shuts down a program without warning. For someone relying on these links for income, this can be a serious issue. Some use tools to monitor links, while others prefer to manually check them from time to time. The real question is whether this worry takes away focus from other tasks like content creation. Should more time be spent checking old links, or is it better to focus on building new traffic sources?