Contextual Advert Network – Google Adwords
Contextual Advert Networks abound on the world wide web, Adwords is the most popular and the largest among them, Adsense offers PPC (pay-per-click) advertising on the internet, and site-targeted advertising for both text and banner ads. Adword’s text advertisements are short, consisting of one title line and two content text lines. Image ads can be one of several different Interactive Advertising Bureau (IAB) standard sizes.