Path: Social network that limits your friends to 50 - Would 50 friends be enough?

[Arthur Little]

... behind it is a former Facebook executive Dave Morin. The unique thing about Path is that it limits you to having only 50 friends on the service. It’s photo-centric and an iPhone app is now available.

The idea of limiting friends to just 50 was inspired by the researcher Robin Dunbar, Professor of Evolutionary Psychology at Oxford University

According to him, the maximum number of social relationships that a human brain can sustain at a given time is 150, while 50 is roughly the outer boundary of our personal networks.

Hmm ... a "morinic" inspired by the findings of a professor who's had all but 50 of his closest friends "dun & barred"?