Facebook, from its launch in 1994, as a site solely for use by Harvard University students, has grown to become one of the largest social networking websites in the world.

Users can join networks organized by city, workplace, school, and region to connect and interact with other people, or join groups that match a specific subject area.

LinkedIn is an online network of more than 30 million experienced professionals from around the world, representing 150 industries.

When you join, you create a profile that summarizes your professional accomplishments. Your profile helps you find and be found by former colleagues, clients, and partners.  Your network consists of your connections, your connections’ connections, and the people they know, linking you to thousands of qualified professionals.