With Location-based addressing there is no way to verify that a single Twt actaully came from that feed without actually fetching the feed and checking. That has the effect of always having to rely on fetching the feed and storing a copy of feeds you fetch (which is okay), but you’re force to do this. You cannot really share individual Twts anymore really like yarnd does (as peering) because there is no “integrity” to the Twt identified by it’s <url> <timestamp>. The identify is meaningless and is only valid as long as you can trust the location and that the location at that point hasn’t changed its content.