P4P can stand for: Pound for pound Pound-for-pound is the term used in boxing, mixed martial arts and other combat sports to describe a fighter's value in relation to fighters of different weight classes. Pay for placement An abbreviation of the term Pay for Placement [LINK: http://www.dublinblue.com/PayForPlacement.aspx] [1] [LINK: http://www.marketleap.com/report/ml_report_49.htm] [2]or "Pay for Performance". The concept was invented at Overture (now Yahoo! Search Marketing) and later adopted by their competitors, most famously Google's AdWords. Under the model advertisers bid on the rights to present a search result for a specific search terms in an open auction. When someone enters a search term that has been bid on, the results from the auction on that search term are presented, ranked from highest bid to lowest. It is also referred to as Pay per click advert