Founded: 2005

Estimated users: 34 million

Addictiveness rating: 6 (out of 10)

Computing Which? has judged Bebo to be the best social networking site on the web.

The 10 most popular social networking sites were rated for their ease of setting up and use, their range of features, and the way they protected privacy and security, including how easy it is to remove personal details.

While Bebo has been crowned as the best it is just a small part of the social networking phenomenon, there's a whole world of sites out there.