Sorry for the confusing language above. SEF URLs are Search Engine Friendly URLs. So, instead of:
site/reviews
The URL would be be something like:
site/index.php?option=com_content&view=article&id=12
I just tried to register on your site, but did not get a redirect loop. I was also able to logout successfully.
Can you:
* Disable Search Engine Friendly URLs in the Joomla Global Configuration area
* Disable Caching in the Joomla Global Configuration area
Test and let me know if that helps. If not, please re-attach the images you uploaded to the post. In the Attachments popup you have to hit the green arrow icon to actually insert what you uploaded into the post.
One thing to note though is that the Facebook Comment box works off of whether you are logged into Facebook.com and does not matter whether you are logged into your website. So, you may still see your Facebook info in the Comments box even when logged out of Joomla.
I hope that helps, but please keep me posted on the redirect loop and if any of the suggestions above helps.
Thanks,
Alex