Methods, systems, and computer program products are disclosed for differential dynamic content delivery. Typical embodiments of the present invention include providing a session document for a presentation, wherein the session document includes a session grammar and a session structured document; selecting from the session structured document a classified structural element bearing a preview designation; and presenting the selected structural element to a prospective user participant. In many embodiments, selecting a classified structural element bearing a preview designation further comprises selecting a classified structural element in dependence upon user classifications of a prospective user participant.