So, I’m following this one rather stupid feed that sets atom:entry:updated to now every time it’s fetched. It’s definitely a case of a misbehaving feed, but Newsblur doesn’t handle this situation well. Other feed readers recognize that the entry is unchanged and don’t resurface it. It seems Newsblur is missing some error handling for this type of misbehavior.
Feed address: https://webpass.io/blog/atom