Wow, this could work. I know that when I’m walking I like to try to reach friends or family with my cellphone. But sometimes I just hold off thinking, “it is dinnertime there” or “I don’t really have anything to say.” What if, instead, I were to drop in on an ongoing family discussion, hear the updates and advice from siblings and parents, leave my own 2 cents worth, then check out. I think I might do this, even daily! The RadioActive project at the MIT Medial Lab is setting out to create a tool like this. What a great idea!