This particular page I submitted is just a page where you can enter a URL and see all threads, and there is a bookmarklet to open it quicker. It does send the U

This particular page I submitted is just a page where you can enter a URL and see all threads, and there is a bookmarklet to open it quicker. It does send the URL to Ampie's server to search for the URL. The extension that you can also install uses a local cache of links (around 100Mb for just HN links, but it doesn't show HN comments) to show the counts of how many times the link has appeared on HN / twitter, and sends the request only when you click on it to load the particular HN posts or tweets that it appeared in.