Definitions for "Pay-per-Impression"
This is advertising where you pay each time your ad is shown ~ each impression. For example, if a page that has your ad on it has 10,000 page views, you will pay for 10,0000 impressions. Pay-Per-Inclusion Search Engine: search engine that charges you money to have your site listed. This is not a true search engine - it is more like a directory.
The type of web advertisement in which you are charged based on the number of times your advert is displayed on search engine results pages or on certain content pages. PPM adverts appear in the "sponsored link" or "sponsored results" section of the search engine results page.
Program where affiliate get paid only for merchants' ad appearances on affiliate's site.