I (barely) recall chain letters being a very common thing back in those days. Probably the first form of "viral content" on the internet. Reading that email, it

I (barely) recall chain letters being a very common thing back in those days. Probably the first form of "viral content" on the internet. Reading that email, it's easy to connect the dots of how sixdegrees probably had the idea of capturing that viral nature in a web app. Great example of clever and somewhat successful adaptation. edit: internet != web