On the basis of structure and function identify the odd out from the following : 

Facebook, G-mail, MySpace, Orkut, Linkedin :

Social networking is an interactive computer-mediated technology that facilitates the creation or sharing of information, ideas, career interests, and other forms of expression via virtual communities and networks. The key feature of social networking sites is effective mass collaboration. Social networking is broadcast to others. Social media is public, not private.

• Social media is a wide term and it includes all types of online media with social nature.
• While LinkedIn, MySpace, and Facebook provide a platform to connect with the world and share our ideas and interests in the public domain, G-mail is used to sending private messages to a person or group.

Thus, e-mail is a part of social media but not a social networking site like Facebook, MySpace, Or LinkedIn.