The Puppet Forge AKA the Puppet Module Repository is live and operational. It’s a store of Puppet modules (and types and providers) that allows you to share your awesome code and modules with others. It also comes with the puppet-module tool that allows you to build modules for, manage and install modules from the forge. You can install puppet-module via a gem:
$ sudo gem install puppet-module
Both the site and tool are in public beta right now so hammer away at it and tell us what you think!