Google have updated its algorithm from June but only in USA. I actually did not know about it but you can read about and much more on this search optimization blog. I found many thing very interesting on the blog, like the video from Matt Cutts.
If you like to make money with your website they also have a section for website revenue and affiliate websites. There is also an interesting article about paid links and how to avoid being banned by Google when you buy or sell links.

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<a href="http://www.stackians.com/2008/07/08/web-review/online-marketing-blog/">Online Marketing Blog</a>