Just a minor issue: I found the ghost feed i was talking about here: https://getsatisfaction.com/newsblur/…
When there is no unread items from the regular feeds, and there is unread in the ghost feed, they will appear when clicking on a folder. From there i can get to the feeds tab (which has no place on the sidebar). It is not possible to delete the site nor to move it to a folder, but i could rename it (its now called “Ghost Feed”). You can also see it in the drop-down menu inside “site settings”.