I recently checked my website stats and found that some pages were being crawled by bots that I think should not be crawled. These include: pages for login, contact, email sign-ups, cgi-bin, php scripts, thank you note and unsubscribe notes(for email sign-ups), TOS, Privacy statements, Admin blog sign-in (for webmaster only).
I'm wondering, what is the best way to keep these kinds of pages from being publicized outside of those who directly visit the site?