That's the burning question that everyone wants to know, right? And then questions that usually follow from that such as: "Which keywords will I use?" "What is the best ad copy to use? An excellent new report is out by Chris Carpenter of Google Cash, and is free by the way reveals how new technology is changing all of that. get it here: http://tinyurl.com/2pnlvm
It shows you how you can actually know what affiliate programs are actually profitable, which keywords to use, and which Ad copy to use with near scary accuracy! These are exciting times, indeed. However, those who don't take advantage of this technology will be left in the dust...pennyless. And those that do learn about this and take full advantage will be more profitable than ever.