I was wondering that too and foung this:
***Seller Information Box Update***
Edit: ***Seller Information Box Update***
The Seller Information Box provides more prominent placement on the item page for information such as the seller's User ID, Feedback total, percentage of positive feedbacks, and more. It also includes a quick link to Safe Trading Tips.
We are introducing the Seller Information Box across the site by category over the next few weeks. Today, the Seller Information Box will begin appearing in more categories across the site.
For more information on the Seller Information Box, please click here (the here is the link above).
Regards,
eBay