Pay per click advertising offered by networks like Google, Yahoo, and Microsoft, is a multi-billion dollar industry, and is set to grow tremendously in the next several years. Smart affiliate marketers are wisely learning as much as they can about pay-per-click; affiliates who do not stand to lose a significant generator of income. There are many reasons why pay per click is so popular in affiliate marketing. Here are some keys to being successful with pay per click advertising for affiliate m...