There are many different elements between Web1.0 and Web2.0. One of them is page rendering. Static pages gradually evolved into dynamic pages and information supply change into to supply content and applications. With the new technologies such as Ajax, html5 applied extensively, users have more diverse experience. These changes may affect user experience and whole website design.
Design: Many Web 2.0 interfaces designed similar to the desktop environment. The industries try to let users work online as same as they use software in a PC. For example, Hotmail and Yahoo mail interface was designed like desktop e-mail software to provide users a familiar environment. Gradually, users transfer their habit from a desktop interface model to an online model.
Furthermore, Because of this way encompasses the combination of the desktop application and browser applications, many kinds of browser application like dynamic menus and dynamic feedback with new technologies was widely used in Web2.0 website. However, there still have some issue for this trend. Different Browsers is one of the problems. Compatibility and complexity issues may bring a lot of troubles for the designer.
On the other hand, another different element of Web1.0 and Web2.0 is the communicative way of information. Web1.0 is one-way information dissemination. The message starts from Website owner. But Web2.0 is usually two-way to receive the message. So this kind of Communication style will push website owner to plan more user interactive methods and application to satisfy users’ need. Like the writing and editing mode in wiki.
In my opinion, simple to say, rich user experiences is to use the internet power with new technology to combine with user interface, and make it close to pc interface. After that, it may get rid of desktop software and complete all the work on online.
Reference:
WEB 1.0 TO WEB 2.0- A TRANSITION FROM PASSIVE VIEWER EXPERIENCE TO RICH USER EXPERIENCE
Rich User Experience Documentation