| 摘要 |
A system and method for presenting information over time to a user over a computer network (12), in which a server (14) stores presentation information (22) and control information (24). The user's computer (10) is responsive to the presentation information (22) and the control information (24), to produce a presentation which includes at least one prompt to the user at at least one randomly determined point during the presentation and to deliver the presentation to the user. The computer (10) also communicates to the server (14) whether the user provided a desired response within a predefined period during and/or after each prompt, following which the server (14) credits the user with having watched the information.
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