“What does Web 2.0 mean for education? These tools are changing how people, including our students, interact with the world. The changing nature of information and the new ways our students understand and make sense of the world signal that we need new strategies and new tools for teaching and learning.”
Web 2.0 new tools, new schools by Gwen Solomon and Lynne Schrum

Web 2.0 is organized by using tags. A tag is a word or words that an author uses to describe the information that he or she is sharing. For example, if you are sharing a picture of an airplane, the tag would simply say “airplane.” By typing in this tag name in a search, you would then be able to search all pictures or information with airplanes as a result.

To know when new content is added to a site, the reader can subscribe to the syndication. This simply means that an email will be sent to your inbox or reader (such as Google Reader) every time that the site is updated.

Let's look at some of the technical differences between "Web 1.0" and "Web 2.0"
Web 1.0
Web 2.0
Application Based
Web Based
Off line
Licensed or Purchased
Single Creator
Multiple Creators
Proprietary Code
Open Source Code
Copyrighted Content
Shared Content

Now, let's take a look at a few specific examples to see the difference.
Purpose of Content
Web 1.0 Example
Web 2.0 Example
View Breaking News
Drudge Report
Share Pictures
Google Images
Tag Graph
Learn a Language

For more detailed information on Web 2.0, click here .