I never heard of the trend being called such, and I didn't think it was widespread enough to be called a "trend." But yeah, I can see it happening, maybe. I don't really think of Janine as being a forties-fifties type name. I think of it as being a sixties-seventies name. I like it, it's very cute and ages nicely, and you could always use Gina, Nina or Jeannie as nns.