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We are going to be putting part of a site on joomla, mainly so 1 person can go in and edit content etc. This will be like an employee corner. There will be another section that they are requesting where counselors can go in and post notes about patients. This part will be secure. They are wanting to be able to post notes where other counselors can read etc. do you think this would be best by blog or forum or any other recommendations?

You could do this with Joomla, but I question the security of the "secure part" in that.

I would recommend Drupal. http://drupal.org

That may be a bit over the top for some, but you may like that better, plus the security is better than Joomla IMO.