Other sites allow interaction, chat and games; but the more advanced sites are more virtual worlds than websites – for example Second Life and Whyville.

The main players are already well established, this is nothing new; but the increasing mainstream use, and the more interesting ways companies are using these tools suggests the way we use the Internet, and interact with people will increasingly change.

Red Light Center is the largest virtual sex world with a registered user base of over 8 million.

Users can sign up for free, create their own avatars, meet people and dance at virtual parties.

There seems to be a growing number of graphical and 3D Avatar Chat rooms, and 3D Avatar games and services.

Very popular with teens, who tend to be early adopters of online technology, but it’s becoming increasingly more widespread in mainstream audiences.

The currency is called Rays, which can be traded for goods and services in the community.

It is also possible to purchase Rays for real money.

Just shout out any question (press enter and type to chat) and you'll get a friendly reply right away, telling you what you need to know.

Don't be shy to ask for help when you are having a hard time figuring something out - just ask, wherever you are, there will always be someone near you who is willing to help you out!

Everyone you meet in the game is a player, just like you, which means that your interactions are with real people and their avatars.