Major Project Revision: Why 1

How is Web 2.0 culture and discourse affecting technical writing and user-centered design?  Specifically in the creation of web apps like social networking sites.  Looking at Twitter, users played an integral part in how the product currently functions.  When it was first released, some of the key features were not present until users attempted to recreate their genre expectations in this environment.  It was the idea of users to create a syntax in Twitter feeds to show that they are responding to another feed.  Also, users are creating third party applications that run in relation to Twitter.  Another question for this study:  how is the user’s prior knowledge of Web 2.0 applications affecting the ways in which they adapt and change newer applications?  What is the accommodation process?