The Arse Elektronika Conference, in which geeks assemble from all over the world to talk about futuristic meldings of sex with technology, kicked off its fourth annual meeting at Chez Poulet in San Francisco last night by first taking a look into the past. In the keynote address, titled “All Along the SexTower: Sex on Stage in America,” noted sex writer Susie Bright talked about many of the different spaces where she’s watched or performed sex in public during her life.