iGain is an affiliate network focused around market research. This network is best for if you are promoting ways for people to make money from surveys and that sort of thing. You can often get a couple of dollars per signup at websites like i-Say and MySurvey.
The members area of the website is very easy to use. Looking through available offers and applying for them is quick and easy to do. They have a wide variety of offers for consumers in different countries with plenty for the UK, USA, Germany and other developed markets.
iGain is a well established company based in America. You can also find them on social media and they run a blog.You can; join, read reviews, or add your own feedback about the program here, honest positive and negative welcome.