Twitpay, which launched yesterday, is a way to send money with Twitter.
It turns twitter into a command line to make payment promises. For instance, to send this fine blog some money I did this:
@nextweblog twitpay $10 for being a kick ass blog
Twitpay will then index my tweet in a Twitpay account. They track all the money that has been sent to and from this account with the ability to cash out or donate the money to a TwitPay charity. You can cancel a payment up to 30 minutes after you tweet it out, by sending a direct message to their account. Twitpay charges $.05 for sending amounts over $1 and users will occur the usual PayPal fees. Their FAQ helps quite a bit.
What is unique about Twitpay is that it doesn’t require the user to signup, if you have a twitter account, you are ready to go.
It was created at Startup Weekend Atlanta.