To me that's what IRC is for. You need a structure in Wave to make it useful as a realtime wiki. That's what etherpad is for and people then copy and paste the

To me that's what IRC is for. You need a structure in Wave to make it useful as a realtime wiki. That's what etherpad is for and people then copy and paste the content into a wiki page later(etherpad is not good for continuous editing FYI so you should never edit the same Etherpad every day. It's a great way for realtime collaboration but ephemeral. You can also use Google Docs too).