Square is a new way to accept credit cards with a mobile device. Keeping it really simple, following Paypal, they only take out a percentage per sale. No monthly fees or extra costs. It’s pretty amazing.
Does it really work? What are the catches? As an experiment, I’ll be trying out Square for my business [...]

Imagine you are a vendor at a conference & you need a way to accept credit cards & process them quickly. Before your options were:
1) collecting credit card #s and processing them over the phone, but taking a risk if the credit cards were expired or bad
2) getting a virtual terminal and paying extra costs [...]