If you are not aware of the work of Howie Schwartz you should look at Howie's Apology, this is a video where he talks about one of the fundamental problems of affiliate marketing, which is, you never get to market to the person ever again once you have made the initial sale. This is when people like Howie, take your lead and then 'upsell' them further, whilst you make, zilch!

I love Howie to bits, so I am quite excited about his JV program.