Look at the mock-up below of a typical Amazon product page (this one for an iPod) and you’ll get an idea of what social media looks like on a Web page. The schematic was created by Web designer and writer Joshua Porter. Shows 16 different ways that Amazon is including links to other related content, much of it created by users. [via Brian Oberkirch]
Only caveat I’d add is that the “sales rank” (at least for books) goes up and down dramatically so you can’t be too reliant on that. On a good day The Corporate Blogging Book ranks under 5,000. On a bad sales day, it’s at 100,000-plus. More useful would be a trend chart showing a product’s ranking over time.