web 2.0, n.Definitions

Web 2.0 is a monetization of your attention

Web 2.0 is the age of targeted advertising

Web 2.0 is an extractive business model that captures a user's information in exchange for free use of the product

Web 2.0 is internet where you get things for free and the provider monetizes your information in return; tracking you, capturing your data everywhere online

Web 2.0 is web 2.0 is the internet where you are the product; where the data you provide is used to sell you things or where your data itself is sold to some third party

Web 2.0 is a perceived altered state of the world wide web, equivalent to a second generation of a software product, which features social networks, creative commons, wikis and other such sites that encourage user input and information sharing.