For a while now, people have been asking for a way to use Groups with Google Wave. It’d be nice to be able to just add an entire team to a Wave, rather that adding them one at a time. Google has just added the first piece of this feature. It’s clunky, but it’s a start.
Starting now, you can add a Google Group to a wave. Once added, you can set permissions for the group and interact with them in Wave. You can add a Group as a “contact” in Wave, making it easy to add them to waves that you create.
A step-by-step guide is posted in the official Wave blog, so check it out and give it a try!