Facebook, Twitter, Bebo and Google allow you to share this and other pages on the Internet with your friends, family, colleagues and other contacts. These websites are called Social Networking sites. The social part comes from the ability to share pages and information that interests you with your contacts. If you do not have an account with these services you may need to register the first time. You can also easily e-mail this page to someone you know by clicking the 'Email to a friend' option.

Find out more about social networks on Wikipedia.com

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