Linkedin is a professional business site - its a great place to list your background and meet people from all over the world. The secret to Linkedin is to join groups that interest you and to join in the conversation when you can add value. I am an open networker in that I have my email on the site and anyone can ask me to connect with them I rarely say no. As my daughter was earning her MBA I encouraged her to get on Linkedin - she found her first job through a connection.