How do you do that? I couldn't find a good way when I looked. It is incomprehensible to me why Google supports the incredibly annoying bait (high res image for Googlebot) and switch (sign up to see high res in browsers) tactic of Pinterest. That shit certainly doesn't make me sign up, it makes me hate Pinterest.

Chrome extension called Personal Blocklist (by Google) There's a Firefox port, I'm not sure where the data goes.