More particularly, methods, systems, and computer program products are disclosed for differential dynamic content delivery. Typical embodiments 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; presenting the selected structural element to a prospective user participant; and receiving from the prospective user participant an indication of interest in the selected structural element. Typical embodiments also include recording the indication of interest in association with the selected structural element.