I believe that the area which has had the most impact is from distribution. Social networking sites such as Facebook and Twitter can promote latest films which can reach a much larger audience, from the use of word of mouth. Also from the powers of Youtube, videos can be put up by almost anyone and viewed, which is a place where people can watch trailers and other features about an upcoming movie. Web 2.0 allows anyone to upload a video, or people to comment on another.
Finally, sites like Netflix and Lovefilm allow a user to purchase films over the internet from a subscription. Technology today has made it easier for people to discover new films without any effort at all.