Definition: Twitter is a microblogging service available for free on Twitter.com.
Microblogging is a way of sending very short messages over the Internet to other people. Twitter’s microblog limits you to sending 140 characters or less at a time. This includes spaces, and characters in text, and hyperlinks.
Twitter refers to these short messages as "tweets."
Twitter was originally marketed as a means to let people share what they are doing in real life, in real time “in between emails and blogs.” Twitter is now widely used by businesses to stay in touch with their customers and their competition.
