Hands-on with Square Cash, a free, dead simple way to send money via email | Macworld: Square's war against PayPal continues with a new free service that lets you transfer small amounts of money between friends using nothing more than email.
Called Square Cash, the new service is available now to anyone with a U.S. bank account and is dead simple to use. Seriously: It couldn't be easier. Unlike PayPal, Square Cash doesn’t require you to sign-up for a Square account first, and all funds are transferred directly between bank accounts with no third-party holding account.