Pink elephant - while I appreciate your opinion, and respect your right to vote as you see fit. Your assumed technical understanding of what it would take to enable this seems to be out of sync (see what I did there??) with modern implementations of this kind of feature. If you're vetoing it because of the technical roadblocks you imagine existing then I'd recommend you read up on technologies like elastisearch. Elastisearch could easily work with the URL, it could even work on the entire page content to catch deltas. But, let's be clear I'm not looking to solution this for Evernote. Only they