The part of a website or a series of webpages devoted to online advertisements. Ad space is a critical component for nearly every online organization or website that is driven directly by advertising revenue. Without ad space, a website or webpage would have no source of advertising income. Pricing for a website's ad space is generally determined by the type of ad area on the website, and the hourly traffic the website receives. While ad space was not an important factor in the early days of the Internet, ad space has become a major factor for websites dependent on advertising revenues alone.