EPV

EPV stands for Earning per Visitor. It’s the profit made per visitor to a website. To increase EPV a lot of research has been done on navigation, advertising and conversion rates. It pays to test several tactics, as small changes can boost income. Server logs can give insight into visitor paths, entry and exit pages, showing you how your visitors navigate your site before they buy your product. For sites showing only ads, without selling anything, studies have been done on the placing of ads.
Images next to text ads and ads in the same style as the website seem to boost Earnings per Visitor.