XF 2.2 Hiding members content from search engines


Active member
To protect our members content from being accessed on a certain forum (debating politics), I'm thinking of hiding that specific forum/thread from search engines.

Am I understanding correctly?

- If I lock access to certain forums for certain users, Google will not mind. But if I lock access to the same forums to unregistered/guests visitors, Google would mind?

- Can I hide a thread from search engines?

Thank you for any help,