Now that my Google Wave beta account has been activated I am starting to explore the possibilities! The first thing that came into my head was that Wave could be a great collaboration tool for exploring requirements / User Stories. You can have an ongoing conversation about the requirements that is documented. You can also have people join and leave the conversation as often as you need. You can upload video, photos etc that show details of a bug or a required feature. It is also ready to run and does not need any customisation work.
I think that Wave would be pretty awful for recording the final spec (maybe Google Docs for that), but for the ongoing exploration of requirements, I think it is good. Obviously, there is not substitute for a face-to-face conversation, but where that is not possible, this could be the answer!
Any thoughts?