They are copying Netflix with this approach. However it makes much more sense for Netflix: prize is $1m, they are an established company, and recommendation sys

They are copying Netflix with this approach. However it makes much more sense for Netflix: prize is $1m, they are an established company, and recommendation system is important but not the core of what they do. I will go ahead and download the corpus though - the problem is interesting and you can't easily find datasets like this. Edit: Anyone care to post it as a torrent? I think posting a link here and in Reddit will be enough to get a good download speed. I wish someone posted a torrent for the Google N-grams corpus as well...