Web 2.0 is the term, which describes the 2nd
generation of the World Wide Web that enables people to share information
online. Web 2.0 basically refers to the transition
from static HTML
Web pages to a more dynamic Web that is more organized and is based on serving Web
applications to users. Other improved functionality of Web
2.0 includes open communication with an emphasis on Web-based communities of
users, and more open sharing of information (Webopedia).