I never managed, over the course of a dozen sessions or so, to get my Monsterhearts players to really use the String economy effectively.
But man did they ever love them some sex moves. With each other, with NPCs. The only ones that really stand out are the Ghoul’s horrible one ( more sex with that person will slake the ghoul’s hunger) and the Serpentine’s wonderfully weird one (sex with someone makes that person into part of the Fallen Dynasty).