Ideas like this make me wonder "who had the need to pay somebody via Twitter?"

I honestly can't think of an instance where that would come up in my daily life. How is this simpler than regular credit cards and Square?

Thanks for the feedback. Sincerely appreciate it. It's simpler for several reasons... 1. You don't need a credit card. 2. You don't need to be physically with the person or business you're paying. 4. In a store setting there would be no more waiting in a checkout line to pay. 5. Sending one Tweet is certainly simpler than pulling out a wallet, swiping a credit card, waiting for a response, then signing.

Now you just have to worry about someone picking up your phone while you're looking away and paying themselves.

Or applications that need access to post to your twitter stream, which is a more likely concern.

I'd want to broadcast my payments ... why?