2007, Topher Cyll, Practical Ruby Projects: Ideas for the Eclectic Programmer (page 2)
Why do Rubyists choose Ruby? Probably because it gets their work done. But I suspect that the project culture is part of it.
2011, Matt Aimonetti, MacRuby: The Definitive Guide: Ruby and Cocoa on OS X (page 14)
By convention, Rubyists usually underscore their method names.