a method for tracking digital media presentations : providing a corresponding web page for each digital media presentation to be delivered ; providing identifier data to the user &# 39 ; s computer ; providing a timer applet to the user &# 39 ; s computer ; and , storing data indicative of received identifier data ; wherein each provided webpage causes corresponding digital media presentation data to be streamed from a second computer system distinct from a first computer system directly to the user &# 39 ; s computer independent of the first computer system ; and stored data is indicative of an amount of time the digital media presentation data is streamed from the second computer system to the user &# 39 ; s computer .