The method and/or apparatus monitors and records the times when a user interacts with a network video player, e.g. a web video player, while watching an online video clip. Specifically, a data collection agent (DCA) is loaded to the player or to a web page that displays the video clip. The DCA collects detailed viewing information and periodically sends this information to a central server. The viewing information is processed by the central server to generate at least one of: a viewership attention span report, a viewership demographics report, and a viewership geographic report.