An avatar, the image a person uses in a virtual world, is currently bound to the particular world in which it was created. But at the Virtual Worlds Conference 2008 in New York City last week, several companies showcased their efforts to allow people to carry their avatars from one virtual world to another, and even out onto ordinary Web pages. These developments point to a convergence between virtual worlds and social networks.
Are we gradually losing the physical self - or creating a spare one?
Read in full - 'One Avatar, Many Worlds'