Continuity mistake: After Mr Pool has dropped his briefcase and everything falls out, as Sabrina helps tidy, between shots she is holding yellow papers, then suddenly a pink file. (00:20:35)
Continuity mistake: When Mr. Pool is scribbling down the formula to turn lead into gold on the blackboard, during each shot the appearance of the writing is different. (00:05:25)
Continuity mistake: When both Libby and Jenny give a flier to a guy in the gym, in the next shot the guys hands are empty and the fliers have vanished. (00:02:10)
Answer: In the S6 E18, "I, Busybody" Salem got permission from the Witch's Council to be human for one day to meet his pen pal, Roxie. It was all a point of view camera shot.