Competitive advantage over traditional advertising
The three most common ways in which online advertising is purchased are CPM, CPC, and CPA.
Floating ad: An ad which moves across the user's screen or floats above the content.
Expanding ad: An ad which changes size and which may alter the contents of the webpage.
Wallpaper ad: An ad which changes the background of the page being viewed.
Mobile ad: an SMS text or multi-media message sent to a cell phone.