Poor financial infrastructure and light regulation have been the powerful propellers behind M-Pesa's growth in some of the world's poorest countries....
Square look-alikes have so far been happy to just copy Jack Dorsey's pricing model; GroupOn's plan of attack would be the most aggressive one to date....
Just as PayPal did a decade ago, Square has created a new subset of the payment industry that caters not to businesses, but to individual consumers....