A community of friends and strangers from around the world sending updates about moments in their lives. You can send a text message from your mobile phone, type a message from the Twitter site, or instant message from Jabber or Gtalk. You only have 140 characters so it’s almost like instant messaging.
Purpose for Twittering:
You can invite people to your LinkedIn network. Each friend or colleague is linked to their friends or colleagues who are linked to their friends or colleagues and so on and so on.
Purposes for Linking In
Facebook is a social utility that connects
you with the people around you.
Purposes for Facebook
Second Life is a 3D online digital world imagined and created by its residents.
Purposes for Second Life
Share some of your favorite social networking sites below: