The Super Affiliate Marketing

From Wickipedia...
According to one report, total sales generated through affiliate networks in 2006 was £2.16 billion in the UK alone. MarketingSherpa's research team estimated that, in 2006, affiliates worldwide earned $6.5 billion in bounty and commissions from a variety of sources in retail, personal finance, gaming and gambling, travel, telecom, education, publishing and forms of lead generation other than contextual ad networks such as Google AdSense.

That a huge market!

In a nutshell, affiliate marketing is an arrangement between an online merchant and affiliate (you), in which the affiliate earns a commission for generating sales, leads and/or clicks for the merchant's web site.
For example, many credit card companies will pay you between $5 and $20 in commission for each visitor that you send to their site who completes a credit card application, and up to $55 for those whose applications are approved.

There is a book from Rosalind Gardner, "The Super Affiliate Handbook". Is value to grab a copy.
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