Just found a nice definition for Web Analytics 2.0 by Avinash Kaushik:
” The analysis of qualitative and quantitative data from your website and the competition, to drive a continual improvement of the online experiment that your costumers, and potential customers have, which translates into your desired outcomes ( Online and Offline )”
A really nice Blog to look an visit:
http://www.kaushik.net/avinash/
