|click to buy from Amazon|
- Higher paying topics are those that have higher profit potential, such as those associated with business and finance. Ad clicks on such adverts will yield high revenue for the webmaster
- The amount of Adword competition. A highly niche keyword may have little competition to bid with. To fill ad spaces, Google may display non contextual adverts, which are less likely to yield clicks. This may cause lower Adsense revenue.
- The quality of the advertising campaign and the words used in the Adwords displayed
- Adwords are location-sensitive, meaning that depending upon where the visitor is located in the world, different Adwords will be displayed. Little competition in a particular area may cause lower revenue.