I'd consider keeping SW acronyms separate from general net acronyms. At least in separate lists if not separate threads. Alphabetical order would be good, too. I see you've included "Faces" - I think it's a good idea to include non-acronyms that need some explanation (see below). And if you post it in General SW Discussion, it'll be the most interesting new thread there in a month.
Other commonly used ones that spring to mind are...
SW: JSC (=SC), DefCol (=DC), pre-THX, '85 mix, '93 mix; pre-ANH, '97 SE (as opposed to '04), SSE (='04 SE);
Screen-names: MBJ (MeBeJedi), TM (Trooperman), bh (baby hum), DJ or d_j (dark_jedi), DE (Darth Editous), dfnyc (digitalfreaknyc);
Technical: HDVD, BR (blu-ray); wav, mpeg, mpg, mpv, 35mm, 70mm, Super8; Dolby Stereo, 6-track, 5.1, 2.0, o-neg, IP (interpositive), IN (internegative), DI (digital intermediate);
General: ROTFLMAO, AFAIK.