Abstract: A technique (and corresponding system) for controlling access to insertion opportunities in a multi-channel streaming media system is provided. The technique receives parameters for access to the insertion opportunities from multiple advertisers, such as desired audience viewership profile characteristics. The technique evaluates the received parameters to select which advertisers gain access to the insertion opportunities to place promotional content. The technique analyzes an audience of the placed promotional content and identifies which of the possible promotional content optimizes the value of the insertion opportunities or other maxima. Unlike traditional advertising in which advertisers pay per expected viewership, the technique may be arranged to charge advertisers only for a targeted audience that viewed the placed promotional content.