Cost Per Lead
Cost per lead campaigns pay you for each action that an end
user completes on the advertiser’s site. Each advertiser defines this action differently.
An example of a lead would be a user filling out a form to
receive free sample of a new product.
With cost-per-lead ads, you are paid for every unique person
you send from your site/newsletter to the advertiser’s site if that person completes a specific action at the advertiser’s
Lead campaigns as well as sale campaigns are commonly referenced
to as CPA (cost per acquisition).
The difference between is lead and a sale is a lead is a potential customer and a sale is a customer.