Original: For example, in a podcast interview, Tim Berners-Lee described the term "Web 2.0" as a "piece of jargon": "Nobody really knows what it means... If Web 2.0 for you is blogs and wikis, then that is people to people.
Simplified: To people who use the Internet, wikis and blogs are Web 2.0. Some think that Wikipedia is a great example of "Web 2.0".