Abstract: A system for advertising to an end user in a computer network is provided. The system includes a server configured to transmit instructions to a client application to display an advertisement and a call-to-action for a reward in proximity to each other. The system is further configured to receive a response to the call-to-action for a reward from the user, and to transmit instructions to the client application to display an indication of a reward. A reward log database is provided in communication with the server. The reward log database is configured for logging the response to the call-to-action for a reward from the user. Methods for advertising and conveying a message, and a client application program product are also provided.