Please check your settings at: subscriptions 
Ok, so the issue apparently was my global profile setting, shown below, which was set to "Turn off notifications".  
Please reply to me so that I can see if it's fixed..thanks!Select email notification preference: 		
- Turn off notifications
 
- Notification for topics you've posted to, watched or marked as favorite
 
- Notification for topics or forums you've selectively watched (listed below)
                      Edited by user
                       
2013-02-19T14:59:55Z
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Reason: Not specified