Placemark is now open source

[dartos]

Redirects to google?

[daenney]

Yes. In their JS, they check if you're coming from HN:

      if (document.referrer) {
        const ref = new URL(document.referrer);
        if (ref.host === 'news.ycombinator.com') {
          window.location.href = 'https://google.com/';
        }
      }

You can copy-paste the link instead and it loads as expected.