Re. google/ig, as I just mentioned in the previous post, the feeds work fine with the google rss reader (reader.google.com). I even copied the xml content from a blogger atom feed that works in my personalised home page, copied it into a static xml file on my menti.name server, and tried to add that same file to google.com/ig, and it didn't work. So there must be something server-side (content-type or other headers? etc.) rather than the actual xml format that makes a difference..
Even stranger - now that Google have added RSS feeds to Gmail (see https://mail.google.com/mail/help/about_whatsnew.html), my backstage Atom feeds work perfectly fine in Gmail, but still no luck on google.com/ig.
