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You are on the right track. If you read this document you may get a better understanding, it has some outdated stuuf about in links not being able to hurt, you, but the stuf about page rank and links is invaluable knowlage. http://www.webworkshop.net/pagerank.html

Thanks for your responses, Ryan and Alan. Ryan's response included a comment about the number of clicks away from the home page. This makes me question my site architecture so I've asked a question about spatial location and site architecture.