Two years ago Tim O’Reilly tagged the word Web 2.0. Since then, Web 2.0 has been the center of many discussions in Web related conferences. Web 2.0 and AJAX were a hot topic Web Design World in Seattle. I am neither an evangelist of Web 2.0 nor a zealous proponent of the concept, but I have some thoughts about it. Interestingly, as I talked to designers and developers in the conference, each one had a radically different interpretation of Web 2.0. Even the presenters had their own variations. Is the ambiguity of Web 2.0 a bad thing that discredits the concept? Recently I attended an academic convocation presented by Dr. Tueller , a history professor. He discussed the topic “Ambiguity in University Education: A Classroom of Learning.” From what I learned, ambiguity is not necessarily a negative attribute. Ambiguity is driving force for higher learning. Ambiguity arouses curiosity and encourages creativity to make various connections. The ambiguity of Web 2.0 has propelled many discussions, conversions and analysis in the web community. The ambiguity of Web 2.0 is not bad afterall.