http://www.caliban.org/ruby/rubyguide.shtml
and
http://www.pathf.com/blogs/2008/10/elements-of-ruby-style/
I'd say having a noteworthy developer write a style guide is noteworthy.
http://www.caliban.org/ruby/rubyguide.shtml
and
http://www.pathf.com/blogs/2008/10/elements-of-ruby-style/