> For the feed ID it¹s not always quite clear-cut when it should be > the same and when it should differ, but in this particular case > it is obviously the same feed and hence should have the same ID. > (Note well that the feed ID may well be entirely opaque with no > way to include arbitrary information, such as a UUID.)
Note too that the feed ID is the way you know that the page of atom entries retrieved from [1] is from the same feed as the page of atom entries retrieved from [2]. e. [1] some opaque URL, details not important [2] some other opaque URL, which apart from and despite being opaque doesn't otherwise suggest any relationship to [1] at all
