There are more than 75 million professionals registered on Linked In. Bebo: In the United Kingdom, Bebo is the second best social network.
Additionally, you can also give and receive recommendations from co-workers and bosses.
This was a strategic move from the founder, therefore, Hi5 claims around 60 million members from more than 200 countries other than the US.
One of the site's biggest transformations is the addition of many entertainment options, including games. Habbo: The Habbo online community is inhabited by pixelated, cartoon-character alter egos.
Ning takes the idea of groups to a whole new level.
The ability to create your own community makes Ning a great home away from home for organizations and groups looking to fill the social void. Classmates: is different from most social networks, in the sense that most of its features are available to premium member.