Quite often, people‘s gut reaction to Twitter is, ―No one needs to know what I‘m doing,‖ or ―I don‘t care what other people are doing.‖
These views are common among those who just don‘t understand the value that Twitter can provide for business. In the words of marketing expert Chris Brogan, Twitter is a useful communication tool that allows you to interact with people around the world in three different ways:

1. Send a short message to a bunch of people publicly
2. Send a short message to a specific person publicly
3. Send a short message to a specific person privately

Twitter is also referred to as a "micro-blogging" service, meaning you can post short updates limited to 140 characters or fewer. Why? Originally, this character limitation was implemented to make Twitter compatible with mobile phones and text messaging. Now, it‘s a useful characteristic that allows users to receive rapid-fire, concise information from many, many people!