Hi,

I have just completed some research on article submissions and there effectiveness in getting traffic.

My findings are split over three articles the first entitled "Google's Duplicate Internet
Content Filter in Action" and links from this lead to the other two reports.

You can find the reports listed under My Articles by Tony Simpson down the RHS of the page at http://www.webpageaddons.com/

You should find these reports will answer your question.

regards

Tony Simpson