I'm looking for a robust data set about movies on Bittorrent. I'd like to understand the popularity of individual titles as measured by the number of users who have a particular title available for download. I'd also like to understand the overlap between title availability. For example: 5,000 people might have Independence Day, 2,000 people might have Sleepless in Seattle, and 11 people might have both of those titles.
Is any of this data already published and freely available? If not, what would I need to do to set up some sort of a monitor to harvest the data myself? It has been widely reported that the movie studios do this to enforce their copyright so I'm assuming what I describe is possible.