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This can be the main concern for so many people but most webmasters fail to recognize this essential matter that unless their web pages get accessed by a lot of potential customers on a constant basis, even if they sign up with a top-paying affiliate network, their monthly revenues will be very weak. This is the primary matter and even before beginning to place referral ads or text links on your pages, honestly examine your overall web traffic stats to see how it is doing online.
If your site reaches the top of Google, for your primary commercial terms, and then everyday hundreds of visitors access your homepage and find some blocks of ads on it, the chances of generating even a decent monthly income will be logical. So instead of looking for the highest-paying networks, try to improve your web traffic stats first and then search the net thoroughly to find the ultimate affiliate site.