I made this Bugreport because the many RSS/XML Feeds are missing entries in Thunderbird. https://bugzilla.mozilla.org/show_bug.cgi?id=1259635 It is impossible to use two sections of one Publisher because most Publishers keep using the same guids. I would like to suggest to build an option into Thunderbird to ignore guids. From 8 Feedreaders i tried on linux (see: 'http://imgur.com/a/hW5w4'), Thunderbird was the only one showing this behavior. This makes Thunderbird nearly impossible to use for me.