eBay have brought a new method of sorting search results to the site:
Best Match allows you to sort the listings that you see based on their ‘relevance’. The ‘relevance’ of a particular listing is based on past buyer behaviour, as well as the information in the listing title and description.
This means that what buyers do on the site affects the order in which listings are displayed in the future. If buyers who perform certain searches end up viewing, watching, bidding on or buying particular types of listings more often, then this will be factored into our relevance calculations in future.
With 75% of users of the site searching rather than browsing by category, figuring out how this one might work could be crucial for sellers.