A method, system, and/or computer program product alter a state of a transmitted message. One or more processors detect an initial broadcast of a message. The message includes a time-sensitive posting, which is related to an event that occurs at an event time. Processor(s) then compare a current time to the event time. In response to determining that the current time is within a predefined time period in proximity to the event time, processor(s) issue an instruction to alter a state of the message.