It may have started as a curious ritual among teens, aided and abetted by their growing dependency on mobile phones and text messages, but the concept of communicating via micro-messages that pack a punch has entered mainstream business. It's no longer a matter of abbreviated words and acronyms that are undecipherable to the over-20 crowd; thanks to online platforms like Twitter, which limits the length of messages to a mere 140 characters, executives are beginning to grasp the art of brevity.