This post is the 6th post in the "Web 2.0 for dummies" posts, based on my Web 2.0 presentation in a conference. After tasting Web 2.0 (part 2) and understanding what it is (part 4) we will drill down to more specific Web 2.0 principles and implelentations. What are Virtual Worlds? Virtual World is computerized simulation to which Real World laws apply (e.g. Time, Gravitation etc.). Participation is by using a virtual identity or virtual image called Avatar. Avatar’s communication with other Avatars is by text, sound and motion (gestures). Virtual Worlds types can be classified into the following categories: Single Player Games SIMS is an example of single player game in which the player creates a virtual reality. However, a Single Player Game scope is limited and it is not a Web 2.0 application. The player may even play using his local computer without Web connection. Massively multi player online role playing games (MMORPG) These games are part of Web 2.0. The play...