Second Life is programmable to the point it has evolving life and grey goo and much more resembles Neil Stephenson's Metaverse
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Second Life is programmable to the point it has evolving life and grey goo and much more resembles Neil Stephenson's Metaverse