• “ …the philosophy of mutually maximizing collective intelligence and added value for each participant by formalized and dynamic information sharing and creation.”

• “ Web 2.0 is the business revolution in the computer industry caused by the move to the Internet as platform, and an attempt to understand the rules for success on that new platform. ”

• “ …all those Internet utilities and services sustained in a data base which can be modified by users whether in its content (adding, changing or deleting- information or associating metadata with the existing information), how play them, in tent and external aspect simultaneously”.