In cost per action marketing payment is based on qualifying actions such as sales or registrations. In a CPA marketing model, the publisher is taking most of the advertising risk, as their commissions are dependent on good conversion rates from the advertiser’s creative units and Web site. CPA affiliates or publishers are usually paid even without a sale. For as long as the particular action is taken by clients, affiliates are paid their lead payments.
How do you get into the system? The simplest way to launch being a CPA marketing person is by joining CPA networks. CPA networks are corporations that maintain a database of advertisers & act as the middleman between affiliates & the advertisers. The CPA network usually assigns an affiliate manager who will help track advertisers or merchants. This is surely another way of earning extra income online.