Moderators can perform that DIS Magic, too. Basically a "sticky" is what some other forums call "Pinned", it depends on the board software. It functions as described by previous posters, it is a thread that stays at the top rather than continually move down if no one posts. Most forums use it for info that is deemed of value to a wide range of posters on an ongoing basis, for FAQ-type threads and for threads pertaining to forum rules. Also some forums use them for special notices and reminders, like if the boards are going off line for updates/repairs.