Why ringworld.chI chose the domain ringworld.ch because Larry Nivens ringworld space opera was one of the first science fiction books that I read. And I was impressed by the richness and thoroughness and consistense of the story plot. When you don't know this book, read it!
By the way: The background image is an image of the Bianco ridge (up to Bernina). The person in the middle of the picture is me.