Disney filed trademark docs on January 5, 2007 to protect the phrase, and, according to a January 3, 2007 post on this blog, it's already holding voice auditions.
I do like that Disney is using BFF since it's an acronym for both Best Friends Forever and "Babysitter Fighting Force." Nice touch. Wonder how long marketing worked on that one?
I've heard nothing else about "BFF" and I received no response for my request for additional information from Lisa Salamone (Head of Animation Production, Disney Channel Worldwide).
Wonder if the pitch went something like this.
OK. Imagine crossing The Baby-sitters Club with "Power Rangers."
But make it a cartoon!