If you are able to promote a product online at your own behalf, affiliates can return a handsome amount for you. Many companies commencing their affiliate programs may allow you to make money per customer and some of them launch target based affiliate programs. It all depends upon you that for which company you are going to do work. A specified percentage is given to you on a confirmed sale.
Usually existing customers do this job for the big companies. They run affiliate programs at their websites and make the sales of cheap web hosting, business web hosting or whatever the newbies want. So in this way both the large company and its existing customer make money by selling web hosting packages. These commission based sales can reach up to a good level if the number of visitors is high on a particular site.
It's commonly observed in webmasters having experience in the field of web hosting that they run affiliates of more than one hosting provider. They find out the most earnable package from the top hosting providers and put it on their own website. They also present different reviews on hosting offered by the world's most famous cheap website hosting providers.
A firm making the affiliate sales must provide full information to the new customers in order to get batter results for long term. One must always refer to a good repute company even the percentage of commission per sales is not so high.