The targeted information presented on blogs, such as daily kos and power line, is an example of

The targeted information presented on blogs, such as Daily Kos and Power Line, is an example of narrowcasting. Its objective is to deliver custom-tailored ads based on demographic, psychographic and past buying patterns to potential recipients who are predisposed to it. It is also an act of spreading an advertising message or signal over a small geographical area or to a selected group of audience. Narrowcasting done through direct mail, cable television, seminars, specialized trade publications, and keyword-associated web advertising.