Hassles of submitting a blogspot XML-sitemap

Usually my posts make it into Google's Web index within 2-3 hours, but not yesterday. Since Ms. Googlebot became lazy fetching my pamphlets, I thought she needs a hint. With one of the last updates Blogger's feed URLs have changed, but lazy as I am I've still the ancient ATOM feed in my sitemaps account. So I grabbed the new URL from the LINK element in HEAD and submitted it as sitemap. Bugger me. Not enough tea this morning. I didn't look at the URL, just copied and pasted it, then submitted the feed to no avail. Oups. Here is why it didn't work:

Blogger.com doesn't come with build-in XML sitemaps, but one can use the feeds. That's definitely not a perfect solution, because the feeds list only a few recent posts, but better than nothing.

Here are the standard feed URLS of a blogger blog at blogspot.com (replace "sebastianx" with your subdomain):
http://sebastianx.blogspot.com/feeds/posts/default (ATOM, posts)
http://sebastianx.blogspot.com/feeds/posts/default?alt=rss (RSS, posts)
http://sebastianx.blogspot.com/feeds/comments/default (ATOM, comments)

None of these can be used as a sitemap, because the post-URLs are not located under the sitemap path.

Fortunately, the old feeds still work, although they are served as "text/html" what can confuse things, so I've to stick with http://sebastianx.blogspot.com/atom.xml as "sitemap".