CPM and one single type of Internet ad delivery rates with rates per 1,000. Multiplied by 1 / 1000 impressions to this charge as the prices. Proportional to the number of ads, most simple charge calculation method in Web pages, such as displayed on the viewer’s screen, and advertising will be charged. Adoption of CPM on major Web media and accounting methods tend to be used for display ads (image ad) is considered relatively high cognitive effects due to it being viewed by advertising, announcements, and more. CPM “M” to mean 1000 in Roman numerals, and comes from the “”mille”” means 1000 in Latin, which is not an abbreviation of the English words.