It's interesting because it's, as you said, real-world data. Where I live facebook wasn't available nor popular during the ".edu only"-era. Here Internet access

It's interesting because it's, as you said, real-world data. Where I live facebook wasn't available nor popular during the ".edu only"-era. Here Internet access is cheap and fast for most people so I would also imagine college attendees get more of their news from newspapers and other non-based source then non-college attendees, because of the academic focus at college.