" You're already generating a gemspec for GitHub, why not using it for RubyForge?"
Because then I first have to ask Tom to create new project for me. :)
That's not a tremendous barrier, but with GitHub, whenever I get some code that looks like something I can spin off as a gem, it's almost frictionless to do it GitHub style.
That said, I have to give Joe a spin and see how it stacks up against Mr. Bones, which is what I've been using.