Internet Based Business ArticlesLearn the secrets of internet marketing and making money onlineContextual advertising is a form of targeted advertising for advertisements appearing on websites or other media, such as content displayed in mobile browsers. The advertisements themselves are selected and served by automated systems based on the content displayed to the user. A contextual advertising system scans the text of a website for keywords and returns advertisements to the webpage based on what the user is viewing. The advertisements may be displayed as pop-up ads or on the webpage.