MyBB Community Forums

Hi!
I have a question.
Google crawling my forum as a guest. sometimes when I view "who's online" page I see this

Google | Replying to thread Google can view reply page! bug?

If google is a guest so why forum do not show "no permission page" for it?

also I have a section in my forum that my forum staffs can view this only. I have thread with this subject "forum performance" in this section.
sometimes when I view online page I see that a guest is viewing this thread

Guest | Viewing thread forum performance

really they can view this private page? it's a bug?

As you have access to those forums, it shows you the page they're trying to view. If the permissions are set correctly then they will see a no permissions page.

it's link of the thread in private section:
http://www.iranbiologists.com/thread-1496.html

click on it, can you see this thread?
if no, but sometimes in online page I see a guest that he is viewing this thread!

As I said, as you have access to those forums, it shows you the page they're trying to view. If you logout and view the Who's Online list, it will show them as viewing the no permissions page.

your forum should have robots.txt file and it is better to use Google Webmasters tools for the Google SEO

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