Target audience
There are two groups of people who are the target audience for most short films. The first group of people are students, who are seeking a future in the film industry. The second group of people are already successful in the film industry and is locating for another successful director, producer, writer, actor etc.
Demographics - These industry professionals and investors may be looking at the short films to find potential for a future director, producer, writer or actor etc; to work for them for their particular company. The student sector of the audience would be viewing the films for inspiration for their own work as a amateur film maker. Most of these short films would be viewed online, so both groups of audiences won't have to go and see these short films and the festivals. The way that this is good is because a short film could get loads of hits on 'You Tube', which would get loads of attention from students, industry professionals or investors.