Delivering dynamic media content to collaborators, including providing collaborative event media content, where the collaborative event media content further comprises a grammar and a structured document; acquiring data representing a client's environmental condition; storing, in the context server in a data structure comprising a dynamic client context for the client, the data representing a client's environmental condition; detecting an event in dependence upon the dynamic client context; identifying one or more collaborators in dependence upon the dynamic client context and the event; selecting from the structured document a classified structural element in dependence upon an event type and a collaborator classification; and transmitting the selected structural element to the collaborator.