The feed autodiscovery links are incorrect in the default theme. A single post page should have a comments feed, a search page should have a search results feed, etc. (The functionality is already there!) Instead, every page has the same feed: The one for the entire site. (<link rel="alternate"> is intended for pointing out an alternate version of the page's content, or an alternate version of the dynamic content of the page.)
Unfortunately, people have come to expect this improper behavior. My suggestion is to provide two feed links by default:
- First, the appropriate feed link, using rel="alternate", and
- second, the global feed link, using rel="alternate index"
This would perfectly implement the autodiscovery and W3C standards and intents for alternate content.
ninjaWR 
