>>998350
Facebook was originally only available at Harvard. The expanded to Stanford second. Over the next year or so Facebook added a couple of schools at a time and used the US News top 25 ranking. I went to one of these schools at the time and the expansion push was driven by the rich kids who all went to private schools and boarding schools together(I also attended one of these places). You had to have a .edu email address to register.
At the time, social media was dominated by myspace and Facebook was marketed as an exclusive/elite alternative. It worked extremely well.