There is, however, something going on that has the potential to change that, and quickly. Not coincidentally, a team of core developers from Netscape's early days is now developing the equivalent of a virtual world browser for MMOs. Called Multiverse, the company includes the same portentous entrepreneur noted above: Bill Turpin. His team includes Netscape veterans known throughout Silicon Valley, if not the world at large: Rafhael Cedeno and Robin McCollum, who built critical Netscape server technology still in use today, and co-creators of RSS; Jeff Weinstein, who coded the world-changing SSL; and Corey Bridges, Navigator product manager who then went on to launch companies like Netflix and Zone Labs. On the entertainment side, ex-physics major and film director/producer James Cameron, of Terminator and Titanic fame, has thrown his lot in with Multiverse, joining its board of advisors.

Their plan is to provide virtual world creators the client, server, and development tools to create an MMO world. The entire technology platform is free for non-commercial use, so academics are paying nothing to create economic, architectural, sociological and other simulations. For-profit enterprises would pay royalties, but only when their games or other applications collect money from consumers, not before.

This is significant because, until now, creating a complex virtual world required tens of millions of dollars in initial development costs alone. The Multiverse technology, currently in beta-testing, claims to lower the cost of virtual world production to a fraction of its current stratospheric level. For many purposes, such as personal online spaces, there would be no cost at all.

Google already has Google Earth, a 3-D mockup of the planet generated from satellite photos. But Google wants you to do more than just zoom through its virtual Earth. The company wants you to add on to it, too.

At the end of April the company released, for free, a popular 3-D modeling program it bought called SketchUp. Google is encouraging developers to use SketchUp to build 3-D layers on top of Google Earth. There's even a website Google provides called 3-D Warehouse, where you can demonstrate what you've built in Sketch Up.

The notion that you can create objects and buildings and place them in a virtual world makes Google Earth sounds less like a mapping tool and more like a metaverse. What's a metaverse? Science fiction writer Neal Stephenson introduced the term in his seminal 1992 novel, Snow Crash. The metaverse was Stephenson's name for a virtual world where his characters play and do business. It was a black ball 1.6 times the size of Earth, with a giant street running around its equator.