Because the data has been available for ages. The Recommendation Engine has little to do with going popular - yet. In the future when we have thousands of new

Because the data has been available for ages. The Recommendation Engine has little to do with going popular - yet. In the future when we have thousands of new stories published after the Recommendation Engine being available for everyone, the same analysis would be very interesting to do again then. It boils down to whether you have enough data or not.