Wave right now isstill closed to most users and Wave isn't yet connected to other communicationsystems, like regular e-mail, which means that the only people we can Wave withare other people on Wave as well. So we don't yet know what using Wave will belike once it gets crowded like e-mail. Also, the technology behind Wave is farmore demanding on servers and the Internet itself than regular e-mail or chat,so we don' t know if the technology will work at scale.