Top 3 Free Micropayment Apps
Micropayment applications give users a way to send or request small payments to support a project, cause or to give as a gift. AppAppeal ranks all micropayment apps based on worldwide popularity.
Flattr is social micropayments system, a way to give money to the things you love.
Lottay.com is a web site that allows you to give money through PayPal as a meaningful and fun gift.
BuySimple.com lets website owners charge their customers on a per-use basis.