Yeah me neither. Is there any good sci-fi about the concept? Imagine sending a human there, if you could do it in a human life span, I'm sure you'd find volunteers to do it. But what would be the psychological effect of having to live out your life on the terminator in perpetual twilight? Would they eventually go insane and just run into the starlight and cook themselves?
I think there was such a planet mentioned in one of Asimov's Foundation books. It was a pleasant resort planet, as I recall, with the settlements around the habitable ring having constantly perfect weather.
edit: I looked it up: Radole, in Second Foundation. Asimov coined the term "ribbon world" to describe planets like this where the habitable zone forms a ribbon.
