This was the first microblogging social network. Twitter was born in 2006 in San Francisco. The user can tell the community of Twitter subscribers what he or she is doing, or comment on what they’re seeing or hearing, in not more than 140 characters (hence the term ”microblogger”). With Twitter it’s very quick to send out a short message to the entire Twitter community online or from your mobile phone. You can use your own name or a pseudonym; it’s up to you. It’s a bit like sending the same SMS to 100 people with just one touch. There are over 200 million people tweeting worldwide, and the network itself is growing exponentially (up by 752% in 2008). You can use Twitter to send free SMS as notifications by SMS are free in some countries, allowing you to consult the entire Twitter community at the same time.
Lady Gaga was the first to top 10 million "followers" worldwide, with Britney Spears and Barack Obama also in the big league. Ashton Kutcher is at number 6 according to the Guardian ranking, while his wife Demi Moore comes in at 28. Britain’s favourite "intellectual" comedian, Stephen Fry, has 3 million followers, and the Prime Minister’s office is popular too.