Twitter has become a popular social networking site based on the idea of updating your status instantly.  While you are on the go, you can text message in what you are doing.  These updates are then sent to your friends, or followers, so that they can see what you are up to and even respond to you.  When you update your status, this is called tweeting or twittering.  Tweets are the status updates themselves, and you can send as many as you want from your cell phone, browser or computer.

Tweets can be up to 140 characters. You can share pictures, videos and links via tweets, too when linked up to a third party web site. Followers can then respond to your tweets or even create hashes to follow certain topics from those on Twitter. These hashes can be used to track popular topics, find new followers and see what the most popular discussions are on the network.

You can use Twitter from your cell phone which is the easiest way to get involved. If you have friends overseas, Twitter offers a free alternative to text messaging fees involved in texting outside your home country. Since you can respond to each other, you essentially are working around cell phone restrictions. Anybody can respond to your tweets as long as they are public, and you can even make your profile private so you can control who sees your updates and responds.

Twitter is rapidly growing as the potential for social networking on the site increases.  If you have not given Twitter a chance, what is stopping you?  See how many of your friends have already jumped on board and give it a shot.  Twitter is a great way to let the world know what you are doing and keeping in touch with those on the go.