Everyone has an idea. But it’s really about executing the idea and attracting other people to help you work on the idea.
~ Jack Dorsey
Twitter was around communication and visualizing what was happening in the world in real-time. Square was allowing everyone to accept the form of payment people have in their pocket today, which is a credit card.
When people come to Twitter and they want to express something in the world, the technology fades away. It's them writing a simple message and them knowing that people are going to see it.
I think Twitter is the future of communications and Square will be the payment network.