A system, method, and computer program product for online advertising, including generating pricing for an advertisement campaign of an advertiser paying on a Cost-Per-Click (CPC) basis or Cost-Per-Acquisition (CPA) based on internal tracking metrics and/or pricing and performance analysis of advertisements...http://www.google.co.uk/patents/US20050149396?utm_source=gb-gplus-sharePatent US20050149396 - Online advertising system and method
