Definitions for "Cost Per Lead"
Keywords:  cpa, affiliate, lead, upsell, signup
The commission structure where the merchant pays the affiliate an agreed fee for each qualified lead (potential customer) referred to the merchant's website.
Advertiser pays each time a visitor clicks on an ad, and fills out a signup form for something "free", whether it is fee information, a free trial offer, free download, etc. The purpose of this is to introduce users to the advertiser's product or service, provide information, dialogue, and ultimately "upsell" the user to become a paying customer.
The total cost of an advertising campaign divided by the resulting number of new leads.