Given this URL:
Append #foo=bar
to the URL, and paste it to the location bar:
- Chrome: https://www.facebook.com/Amazon?v=app_165157536856903#foo=bar
- Firefox: https://www.facebook.com/Amazon?v=app_165157536856903#foo=bar
- Safari: https://www.facebook.com/Amazon?v=app_165157536856903
Keeping the URI fragments in 301 redirects is actually recommended in a W3C document, and Safari not sending one is considered a bug.