I agree. We use Wave for all kinds of communication in our startup, and it's just an amazing tool for small workgroup communications and document drafting.

I'm actually rather peeved it's going away, because (1) I don't want to waste a bunch of time trying to migrate data out of Wave, and (2) there really isn't much out there that can replace Wave in our workflow. We use Wave as a GUI-editable wiki where documents gracefully age out of view, and it's just great for that. I'm really going to miss it.