The concept seems a little difficult to understand at first, especially where privacy is concerned, but it actually works out pretty well. Firstly, the users log into TwitPay.me and set up their accounts by linking their PayPal account (your password is not required at this point, just your email address) and establishing a PIN number. Next, when the payer is ready to pay another Twitter user, they simply write a new tweet like this "@
Its really cool, and I hope that more people donate to causes using it. It does cost $0.05 per transaction, but it works out nicely since TwitPay.me hosts the service and needs to offset the costs anyhow. Try it - its definitely worth having in your Twitter toolbox!