OPEN

there seem to be four factors holding these networks back: Users are hesitant to join unless their friends are already on board, businesses won’t join up without a critical mass of users, many phones still can’t handle the necessary technology, and there are privacy and behavioral concerns.

Excepting the smartphone adoption issue, these barriers seem just like the ones which Facebook, Twitter and any number of other social platforms before them had to overcome… Interesting analysis all the same.