The sandbox option looks the most likely outcome. For now I am working on solo waves. Using a wave as a kind of wiki for myself to store links, ideas, schedules. The scroll function when its fast is good and you can locate stuff easily enough. One enhancement would be the ability to e-mail this content say into a Google Doc.

The problem arises with Wave as you bring more people onto the Wave so for now I am going solo and perhaps bring one or two people onto my wave. I realise Google had visions of large groups all collaborating on a Wave but until they get the user experience sorted its a pipe dream. In some respects Wave attempts to do much.

I prefer Twitter by a mile but Wave holds out the promise of a richer communications experience beyond 140 characters and a link. Google Wave could become a digital side road whereby you communicate on Twitter, email or messenger. Then at some juncture you invite a small group onto a Wave to continue and compliment discussion held elsewhere.

Google Wave is not a Twitter killer but could find a niche in the future a one place among many were purposeful conversations could take place.