Find a 20-something, a 30-something and a 40-something. If you’re feeling especially experimental, add in a 70-something and a teenager. Say the word: “voicemail.” Watch what happens. Voice messages — and the etiquette around them — are changing. Some people are rooting for voicemail to disappear completely from our communication repertoire. "Typing and talking have an inverse relationship: as it's gotten easier to write your feelings, it's gotten more d