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nd since the outside content doesn't pass through Linden Lab's servers, it won't necessarily appear exactly the same way and at exactly the same time to all viewers. The company is currently working on allowing people to associate live Web content with so-called prims, the geometric building blocks that Second Life denizens use when creating virtual objects. Web content could then be stored on a portable object that a user's avatar can carry anywhere in the virtual world. "You can take it out and show it to someone without that land having to be yours," Miller says.

A virtual whiteboard, for example, might display a document, which two users could work on at the same time. In addition, he says, the company is building a programming interface that will allow other developers to import different types of media--Flash, for example--into Second Life without any change to the virtual world's underlying code. Miller says that companies or individuals will then have much more flexibility to use the types of media that suit their purposes within the world.

However, Rivers Run Red's Bovington says that Second Life tends to be the cheapest, most versatile way for a company or individual to try out Web integration. Although it has fewer security features, he says, it requires a smaller initial investment.

poured out my heart from a place of loneliness and grief. Click click went the computer keys, like the staccato beat of my heart. Clack clack went their replies, their empathy and their own tales of triumph and woe. Via my avatar - the persona I'd created to engage here - I was participating in an "anxiety support group" in the free, virtual world of Second Life.

As I write those words, I can hear the scoffing. Pathetic! Escapist! Are you addicted to computer games? Do you have no friends? Second Life? That place is just about weird sex fantasies!

No wonder analysts at Gartner, a leading technology research company, predict that three years from now 8 in 10 Internet users will work or play in virtual spaces.

Which, annualized, gives us 1,752 kWh. So an avatar consumes 1,752 kWh per year. By comparison, the average human, on a worldwide basis, consumes 2,436 kWh per year. So there you have it: an avatar consumes a bit less energy than a real person, though they're in the same ballpark. Now, if we limit the comparison to developed countries, where per-capita energy consumption is 7,702 kWh a year, the avatars appear considerably less energy hungry than the humans. But if we look at developing countries, where per-capita consumption is 1,015 kWh, we find that avatars burn through considerably more electricity than people do. More narrowly still, the average citizen of Brazil consumes 1,884 kWh, which, given the fact that my avatar estimate was rough and conservative, means that your average Second Life avatar consumes about as much electricity as your average Brazilian.