what mean this
 

you do not have permission to access this page. This could be due to one of several reasons:

1. Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
2. If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.

What does this mean?

When you first sign up, you have limited privileges for posting stuff. If you stick around for a while and the admins decide that you're not a spammer, you'll gain more privileges. Spammers get kicked out.