Another great feature of keyword spy is that they can show you which websites are promoting an affiliate offer from your competitors. This is very valuable because running a successful affiliate program is all about competitive intelligence. Most affiliate marketers and publishers have no loyalty to their advertisers, especially if they came from an affiliate network. They want to optimize revenues for their website and if you can pay them more money per sale, or offer better converting offers or landing pages and banners, they will switch to you. So, all you really need to do is see which affiliates are running ads for your competitors and you have a great target list to get moving on.

WhatRunsWhere may also show you some of this data, as will Google Alerts.

Happy Hunting.