So far Square has been focused on the annihilation of its clones and when the dust settles, it will be the undisputed champion of the world of mobile payments....
Dwolla is offering a line of credit on unknown terms, which we can only use inside the company's small network of merchants and we get no benefits for doing so....
Loop is offering an imaginative solution to mobile payments, but technological changes and a lack of a viable business model doom the start-up to failure....