There was really nothing more to discover about relationships that late in the social network game.

At that point in time, Facebook's networking features were equivalent to Myspace and Friendster, and still is today for the most part aside from some fancy bells and whistles.

The only way you could break into the market was to find a niche, and the Ivy league exclusivity at the beginning was that niche. Facebook was not a pioneer in this field as evidenced by sites such as ConnectU and Orkut.