Virtual+Worlds

Introduction
A virtual world is a computer-based environment. Users/players are represented in the world by an avatar. They use the world to interact with other users and objects in the world.

Probably the most well known virtual world is Second Life.

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Task
Find out and note 10 facts about Second Life

Questions
What is an avatar? Is a virtual world a good or a bad thing? Give one advantage and one disadvantage of a virtual world.