Earning. Review on Google Adsense

Google AdSense is a program run by Google that allows publishers in the Google Network of content sites to serve automatic text, image, video, or interactive media advertisements, that are targeted to site content and audience. These advertisements are administered, sorted, and maintained by Google.The content-based adverts can be targeted for interest or context. The targeting can be CPC(click) or CPM(impression) based. There's no significant difference between CPC and CPM earnings, however CPC ads are more common. There are various ad sizes available for content ads.

The ads can be simple text, image, animated image, flash, video, or rich media ads. At most ad sizes, users can change whether to show both text and multimedia ads or just one of them. As of November 2012, a grey arrow appears beneath AdSense text ads for easier identification.AdSense for video allows publishers with video content to generate revenue using ad placements from Google's extensive advertising network. The publisher is able to decide what type of ads are shown against their video inventory. Formats available include linear video ads(pre-roll or post-roll), overlay ads that display AdSense text and display ads over the video content, and the True View format.Publishers can also display companion ads - display ads that run alongside video content outside the player. AdSense for video is for publishers running video content within a player and not for YouTube publishers.