If there is a thread that is of interest to you, and you would like to keep track of it to read again, click "Trace" located to the right of each thread title. You will find it takes you to your "Personal Page" (also listed at the top of each page). You will thereafter be able to find your traced threads on your Personal Page, thereby saving you the dilemma of forgetting the exact name of the intriguing thread you saw late one night when you ought to have been sound asleep.

Enjoy!