Searching for the correct answer all day, and nobody seems to know, so I thought I'd give it a shot here as a last effort before I keel over.
FeedBurner's SmartFeed service does this:
Translates your feed on-the-fly into a format (RSS or Atom) compatible with your visitors' feed reader application.
Based on the above information, which would be correct to add to my <head> section? The difference being the type="foo" sections?
<link rel="alternate" href="<?php echo feedburner_url(); ?>"
type="application/rss+xml" title="FooBar RSS News Feed" />
or...
<link rel="alternate" href="<?php echo feedburner_url(); ?>"
type="application/atom+xml" title="FooBar Atom News Feed" />
or possibly even both?
Can't find the answer anwywhere. Google (owns FeedBurner), Google groups, FeedBurner help, etc. And FB conveniently doesn't have any type of help system. Maybe that's a hint? =)