To me, "extras" means BBBJ and/or FS. With all the questions about where one finds extras, and speculation about how prevalent it may be, I decided to compile a list of SCs I've visited over the years, and recall where I got ITC extras, where I struck out, where I got OTC, and where I got OTC-for-free.
The results were about 50/50 for ITC extras:
-- Extras ITC (* means OTC also; ** means OTC for free) California - Market Street Cinema California - New Century Theatre Florida - 2001 Odyssey Florida - Lipstixx ** Florida - Scarlett's at Ybor Strip Florida - Matador ** Georgia - 24K Club Illinois - C-Mowes Illinois - Dollie's Illinois - Miss Kitty's New Mexico - TD's Gold ** New Mexico - TD's North ** Rhode Island - Cheaters * Texas - Zebra's Show Bar ** Texas - Chicas Locas Texas - Cabaret Club ** Texas - Foxy ** Texas - Jaguars ** Texas - JB's Lounge ** Texas - Kokai ** Texas - Montana Hideaway ** Texas - Red Parrot Texas - Tequila Sunrise ** Texas - Executive XTC Texas - Penthouse Club ** Texas - Treasures Texas - 24K Gold Club ** Texas - Babe's Mens Club **
-- No extras ITC (* means OTC; ** means OTC for free) Alabama - Sammy's Alabama - Fantasia Arizona - Baby Doll's Arizona - Babe's ** California - Star Strip California - Seventh Veil California - Cheetah's Colorado - Fabulous TNT's Florida - New Green Frog Florida - Sammy's Florida - Club Risque Florida - Baby Dolls Florida - Babe's Florida - Mons Venus Maryland - Mouse Trap II New Mexico - Fantasy World Ohio - Living Room Ohio - KC Lounge Rhode Island - Desire Texas - Beavers Texas - XTC Cabaret Texas - Club Fantasy Texas - Palace Men's Club Texas - Wild Zebra ** Utah - American Bush


This research sounds worthy of a Nobel Piece prize.