But the entry for a comment in the comments feed does not carry the id
of the post that the comment is on, so there seems to be no way of
knowing which post feed to fetch to find out the post title.
Yes, this is an omission on our part. I'll file this as a feature request.
Thanks a lot.
For authors with homepage URLs, the data is stored in the <uri>
element of the <author> element. This does not include the Blogger
profile URL, though, just the URL that a user may have entered when
commenting or specified in his profile.
You are right, hadn't noticed that before. In which case, as you
suggested earlier, I think it would be useful if for comments posted
using Blogger identities have an uri element with the URL for the
Blogger profile.
That is, whenever a commentator's name is hyperlinked when visiting
the blog, the feed should have a uri element pointing to the same URL
so that the user experience remains consistent between the blog and
applications developed using the API.