Amy Hoy, with her colleagues Thomas Fuchs and Dieter Komendera presents really cool gift to all the Ruby Advent readers. They made an exclusive cheatsheet for us on Payment Processing! We know how much a PITA it is, but the way they tackle it is spiffy and you will love it!
About the Author
Amy Hoy, is an interface designer/developer from Maryland. She is a well-known blogger/speaker in Ruby (and Rails) community. She recently launched an awesome time tracking app called Freckle with Thomas Fuchs and Dieter Komendera.