If you dont know what I am talking about, your not alone. Twitter is a free social networking site. It is what they are calling “micro-blogging”. This service allows users to send “updates” (or “tweets”; text-based posts, up to 140 characters long) to the Twitter web site, via the Twitter web site. These are sort of like text messaging for the web. They can flow into other apps like, instant messaging , or a third-party application such as Twitterrific or Facebook.