As you may or may not know, GemCutter.org will be the new default gem source by becoming rubygems.org. This is pretty exciting, because previously you had to have you project registered on rubygems.org in order to publish to it, or use the non-standard github gem host. Good stuff.
In any case, the new OpenX gem can be installed now by executing
sudo gem install touchlocal-openx --source "http://gemcutter.org" # Load it using require 'rubygems' gem 'touchlocal-openx' require 'openx'
In Rails, include it like this in your Rails::Initializer block:
config.gem "touchlocal-openx", :lib => "openx", :source => "http://gemcutter.org"
I’m a proud parent!