0 commentsIM has what experts call "presence," meaning that senders know whether the desired recipient of an instant message is online. Second, there is immediacy; senders and receivers communicate through text messages in real time. Then, there is urgency; as e-mail in-boxes get jammed with junk e-mail, IM has become the most reliable way to ensure that an electronic message receives priority attention. Finally, there is control; computer users have the power to message people they choose, while avoiding others.