correct.
Original post:

The next big change to the classified forums is the requirement that you select a thread prefix when creating a new thread. There is a drop down box in front of the thread title text field which lets you select from the most common types of threads made in the classified forums: FS, WTB, FT and FS/FT.

Please note that you do not need to add those prefixes to your thread title, the forum software will add it automatically.