Adwords

AdWords is main advertising product and main source of revenue. total advertising revenues is billions.AdWords offers pay-per-click, i.e., cost-per-click (CPC) advertising, cost-per-thousand-impressions or cost-per-mille (CPM) advertising, and site-targeted advertising for text, banner, and rich-media ads. The AdWords program includes local, national, and international distribution. Image ads can be one of several different Interactive Advertising Bureau (IAB) standard sizes.