Is that the only real challenge, raised by email, that comes to mind? I can think of another one right away: the protocol allows people to send me messages a

Is that the only real challenge, raised by email, that comes to mind? I can think of another one right away: the protocol allows people to send me messages as if they have come from someone else. Another one: people can send me emails that I cannot reply to. ("Thank you, kind sir, for offering me some Tadalafil, but you can exclude me on any future offers.") By my reckoning, Wave addresses both of those challenges pretty well. I've noticed that not even talking face-to-face will guarantee that a given participant will judge what to say or not to say. I've known several people over the course of my life who seemed to be born with a missing mechanism that allowed them to sense, from nonverbal cues, when it's time to terminate an interaction.