RAFO is an acronym for "read and find out." Evidently the acronym got started in online Fantasy website's author interviews (most notably wotmania.com.) This is a common resonse to questions concerning plot development, and is sure to make any reader graon.
Reader's Question: "Is Bela the Creator?"
Author's Response: "Read and find out."
Reader to other Reader: **graon** "Not another RAFO!"