There are some parts of this forum that I can't post on... for example, I try to reply to this topic http://hipforums.com/forums/showthread.php?t=79215 and it says "someone036, you do not have permission to access this page. This could be due to one of several reasons: 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? If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation."
That's to keep FLamers and Spammers OUT. You have to have "X" number of posts to get into certain forums.
Yeah both America Attacks and politics require you to have "member" status. They both say so in the descriptions underneath the forum names on the main page. Right now you are just a "guest" but when you get up enough posts you can post in those forums. Or if you want to contribute some money to the forums before that, you can post in them.