Interesting information on how ISPs selling the surfing history of their consumers.
http://www.washingtonpost.com/wp-dyn/content/article/2008/04/03/AR2008040304052.html
http://arstechnica.com/tech-policy/news/2007/03/your-isp-may-be-selling-your-web-clicks.ars
http://www.wired.com/threatlevel/2007/03/does_your_isp_s/
In USA, an ISP makes $5 per month per user. Recently I have received emails and other information related to the websites I surf. I wonder what the going rate every month is for my surfing habits. Some alternatives to get rid of this problem is to use encryption or get your own ISP.