When I log into WordPress, I see this error on the Dashboard, under Incoming Links:
RSS Error: A feed could not be found at http://blogsearch.google.com/blogsearch_feeds?scoring=d&ie=utf-8&num=10&output=rss&partner=wordpress&q=link:http://afsphotography.ca/. A feed with an invalid mime type may fall victim to this error, or SimplePie was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.
My site is http://afsphotography.ca but it has an "Under Construction" page up right now so I don't know if this helps.
I can access the page http://afsphotography.ca/feed/ and an XML document appears in text format, however it is not recognized as a feed by Feedburner.