Sorry this is such a short post but I want it to be straight to the point. These are my top 3 affiliate networks that I use. This is by no means anything other than my opinion and there are hundreds if not thousands that I haven't even tried yet, so stop by again for updates as I use more and report back.
Note: These are my top 3 for Zero Friction techniques. ie: I do not use these networks for sales. Only lead and zip code type promotions.
Check them out to see what you think. They all have great offers for you to use and great tracking facilities.