I'll post a quick example of what I'm questioning. Let's say you have a new auction site, and there is a section titled "blue widgets". You are getting some traffic, and your serps for this term are ok, BUT since your site is new there are no auctions posted in this section yet. So you decide to add a feed from epn (Ebay Partner Network) to include some blue widgets on the page (or even items from amazon for that matter). Does google and other search engines give any weight for these items? Your "blue widgets" page has gone from no items to 25 items, with each item having the keyword in there, AND it is exactly what a person would want to find when trying to purchase a "blue widget". Many terms I am competing for are on page 2 and 3 of serps, and many of these pages/categories are still empty. Would adding epn or amazon items to these pages help the serps at all?