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I'm doing an analysis to understand why Amazon outranks eBay sometimes. They are both big brands with alot of trust so just want to confirm my thinking and maybe gain some new insight. Amazon has more pages indexed (in Google), more internal links (pointing to homepage), and more images indexed in Google Image Search (alot more!), and of course a higher page rank.. So, question I would like to run by everyone, is are the stats basically what is responsible for Amazon's SEO success as compared to eBay? Or, is there something else I'm missing? PR:  eBay 7, Amazon 9 Pages Indexed:  eBay 106M, Amazon 875M Internal Links:  eBay 62, Amazon 261 Google Images:  eBay 150M, Amazon 4.3B