If you are a merchant, advertiser or retailer considering performance marketing in the broad sense or affiliate marketing specifically, this article from Chief Marketer may be helpful.
<strong><a href="http://chiefmarketer.com/marketing-roi/0113-performance-media/">Some Fundamental Questions About Performance Media</a></strong>
"While performance media may not work for all marketers, CMOs should at least understand the performance media options available to them. In fact, answering some fundamental questions about performance media can help to clarify the options and opportunities available."