Show HN: Find HN threads about the page you're browsing
Love the idea, I have thought about this before and the main issue is training my self to click an extension to check. If an icon flashed when there was a HN submission (ideally only if I didn't come directly from HN since I already know) it would be way more useful.That said we all know the big issue with that is privacy. I don't want an extension sending every url I visit to any service (directly to the API or through some third-party). I've mulled over this issue before and I'm not sure how much space it would take up to store a list of urls that have been submitted to HN (Maybe keep 1 month plus all submissions that got over 100 upvotes or something) and check against that local list.Then, and only then, when you get a match you can call out to the Algolia API to get the HN url (or store that as well depending on size).I have no idea, off the top of my head, what the storage requirements for this look like but I don't think they would be huge. The other issue (which I want to look into the source to see how this handles it) is the stupid social/ads tracking params that are added to URLs. Maybe there is a good list of these that you can remove (from both the current URL and the HN submission) so you can see if it's the same base URL.