Abstract: Provided, inter alia, is a system for generating substantially simultaneous alerts, in which a plurality of user devices is accessible via at least one publicly available network. Each such user device has installed on it an alert-based client. A server is configured to download identical alert information, including a message that has been encrypted, to the plurality of user devices. The alert-based clients are configured to receive the alert information and, in response: (i) to store the message in encrypted form until just prior to a specified delivery time; and (ii) to decrypt and deliver the message substantially at the specified delivery time. By virtue of the foregoing arrangement, substantially simultaneous delivery of the message to the user devices is achieved.

Abstract: Provided, inter alia, is a type of contest in which, at various intervals, geographically dispersed players attempt to answer the identical problem at substantially the same time. In representative embodiments, problems (typically, questions) are made available at seemingly random times throughout the day (or throughout some specified time interval), and players have the opportunity either to respond to the problem or (e.g., in the event that a given player is occupied when a particular problem arises) to pass on the current problem and wait for another one. In such embodiments, more questions are made available than the players are permitted to answer in accordance with the rules of the game, so that players have flexibility as to when they participate.