All, the Messaging problem should be fixed.

Comment below if you still have problems. 

Issue: People have only been able to message Friends. Attempts to send to anyone not on your friend list generated the following errors: 

             <MemberName> does not have an established relationship with you.

             You are not allowed to send this message because all recipients are blocked.

If you do NOT want to receive messages from anyone (Admin/Moderators cannot be blocked), do the following:

1. Click on the little person in the upper-right.
2. Click on My account.
3. Click on Edit.
4. Scroll down and uncheck Enable private messages.

If you need to block someone:

1. Click on the little person in the upper-right.
2. Click on Messages.
3. Open the message and click on Block. OR...
4. Click on Blocked users.
5. In Username, type in the name of the user you wish to block. (Separate multiple names with commas).
6. Click Block user.

Please let me know if you have any other problems.