Most people who visit a website leave and never come back, which makes it hard to build steady income. Email subscribers are different because they can be contacted again and again with new offers and content. When someone subscribes, it means they showed interest, so they are more likely to trust recommendations later. Building an email list takes effort, but it can create more sales over time compared to just relying on search traffic. The problem is getting people to actually subscribe in the first place. Does having subscribers really change how much affiliates earn?