Who is RFS? is a popular on-going joke within the forums. It usually involves a user posting something in which they refer to Dracophile as RFS, his previous forum name. Another user will then remark in another post, "Who is RFS?" Then a second user points out in a rather sarcastic way that Dracophile is not known as RFS anymore.
This same joke is sometimes used with other staff members who have changed names, but not often.