Use the following links to construct the web 2.0 concept. Group 1, will read about the definition and characteristics from the following websites:
http://www.webopedia.com/TERM/W/Web_2_point_0.html
http://dotgiri.com/2009/04/29/what-is-web-20/
Groups 3 and 4, will read about the advantages and disadvantages of web 2.0:
http://www.exforsys.com/tutorials/web-2.0/advantages-and-disadvantages-of-web-2.0.html
http://compassioninpolitics.wordpress.com/2008/02/01/advantages-and-disadvantages-of-social-media/
