Obtaining screenings at major film festivals like Cannes, Sundance, and Toronto allows films to get immediate reviews from journalists that can either boost a film's reputation or damage it. Smaller budget films can also screen at smaller festivals to generate some attention. Film websites are another popular promotional method, especially for blockbuster films, as they allow audiences to find information, watch trailers and behind-the-scenes footage, and eventually purchase the DVD. Websites can also generate revenue through ads. Synergy between a film and its soundtrack, featuring popular artists, can create publicity by getting audiences interested in listening to songs from the film. Billboards are another traditional technique used by large studios, but they can be expensive