In this technologically advanced world, it is important to stay up-to-date and informed via email and text-messaging, at least on business matters.  But some companies and employees are questioning the etiquette of iPhones and Blackberrys that seem to interupt meetings, distract employees, or insult speakers.  The NY Times reports that more than a third of employees check their email or text messages during meetings. So what are the rules of etiquette surrounding the use of hand-held communication devices such as iPhones and Blackberrys? Here are some do's and don'ts to remember: 1.  Do not try to conceal the use of one of these devices as if you were a 14 year old in detention.  If you are going to use it, use it! 2.  Do turn your ringer to silent or vibrate while in meetings. 3.  Do not respond or send any personal messages while in meetings. 4.  Do respond promptly and efficiently to business related messages. 5.  Do use your hand-held as a research tool. 6.  Do use your hand-held as a note-taking device. 7.  Do not send messages back and forth to colleagues in the same meeting. 8.  Do not have inappropriate pictures of yourself or anyone else saved on your device.  9.  Do use appropriate spelling and grammar for business communications. Obviously, this list is not exhaustive but etiquette is important for everyone to learn.