Followed Threads and Favorite Messages
Followed Threads
This feature allows you to follow one or more threads and receive an email notification in case of a new message posted in a followed thread.
To follow or unfollow a thread, click on the "(Un)follow this Thread" link at the top of the concerned thread.
You can then find the list of followed threads by clicking on the "Followed Threads" link in the menu.
By default, notifications are enabled and new threads you open are added to your list of followed threads (however, it is possible to change this in your account preferences).
Favorite Messages
This feature allows you to mark messages to find them more easily later.
To mark a post as a favorite or to remove it from favorites, click on the star icon of the concerned post.
You can then find the marked messages in "Menu" > "My Favorites".