Subscribing to threads is a great way to keep track of threads that you want to revisit, organize threads and information want to be able to reference at a later time, or to receive email notification when new posts are added to the conversation.
To subscribe to a thread, click the 'Thread Tools' link in the top right corner of any thread (pictured below) , then click 'Subscribe to Thread'.
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For information on how to organize and manage your subscriptions,
click here.