ZillionBits.com have come up with another good article that I think you will find interesting. http://www.zillionbits.com/misc/google-and-jaggers-aftermath/
The original copy of the article by it's author is at http://www.oakwebworks.com/articles/jaggers-aftermath.htm
Nice article, I havent seen any major changes in my ranking as of now, but will be sure to keep the above points in my mind before forwarding to any more SEO links for my sites. I have although seen that duplicate hurts a lot. One of my friends site is an article directory which collects articles over the net and arranges them in an order. However some of the starting contents which he collected came from 2-4 sites and seemed like duplicate sites for google i suppose, the site ranking went from pr5 to pr2. Luckily i havent had any bad experience with Pagerank till now. Lets see how the coming update is. Just can wait and watch for the google surprise. Regards, Admans.
This article really just restates what is already known and says we should do it more. Groundbreaking news...