What is Web 2.0 ?

This is a question many people ask themselves since the terminology was first introduced by Tim O'Reilly back in 2004. In 2005 he even started describing the concept quite extensively and I can only suggest people to read one of his excellent articles about "What is Web 2.0?".

However all this is quite technical and being a strong adept of the old saying "A small picture is better than a long speech.", I could not resist to share or re-share the following picture that got presented to my attention last week during a Star Wars Combine Developers Meeting. So here is a view of Web 2.0 (picture originally from http://xkcd.com/256).

As you can see, Web 2.0 is all around us already and this map makes it so much understandable. Simply brilliant !