While exploring the definition of Web 2.0 from the recommended readings, i discovered that many people found the term difficult to define. Even Tim O’Reilly, who supposedly used the term in the 2004 Web 2.0 Conference to mean ‘ a web platform’, had to organise another conference to further brainstorm and define the term Web 2.0. An all encompassing definition of Web 2.0 would be difficult to achieve as there are a number of elements or features which constitute Web 2.0. Some essential attributes of Web 2.0 are as follows:
1. User participation
2. Dynamic content
3. Metadata
4. Web standards
5. Scalability
6. Collective intelligence

There are many definitions for the term Web 2.0 and one such definition is given below.
Web 2.0 is an umbrella term encompassing several new Web technologies which  “harnesses the Web in a more interactive and collaborative manner, emphasizing peers’ social interaction and collective intelligence, and presents new opportunities for leveraging the Web and engaging its users more effectively.” (Source: http://en.wikiversity.org/wiki/Web_2.0).

The YouTube video below entitled “Explain Web 2.0” explains clearly 3 key aspects to Wed 2.0.
1) Interpersonal Computing
2) Web Services
3) Software-as-a-Service (SaaS)-application functionality eg Googledoc, Zoho etc.


Ian Delaney in his blog dated 17Aug 2006, concluded that any Web 2.0 applications, sites or services will have a combination of some of the 10 features seen in the mindmap below.  He also added that ‘Web 2.0 is still too young as an expres­sion to have reached the point where we have con­sensus about what it means. It means dif­ferent things to dif­ferent people at the moment.’
For more info. go to http://twopointouch.com/2006/web-2-0/10-definitions-of-web-20-and-their-shortcomings/


A tag is a keyword or term assigned to a piece of information (eg internet bookmark). This feature or metadata helps describe an item to enable it to be easily searched. Tagging can be done by the creator or by its viewer (eg Delicious (2003), Technorati,Diigo). YouTube, Flickr, FB have tag features to help classify and label objects. Tags are an important features associated with Web 2.0 services.

  • Labelling or tagging is important as it helps with information classification.
  • A tag cloud (or word cloud or weighted list) is a visual representation of text data to depict tags or keyword metadata on websites. Popularity distinguished by the size of the font and color.
  • Wordle – web application for creating artistic word clouds from user. An example of wordle is shown below.