I think this one was rated too high IMO. I don't know, it just seemed kind of like a Ghost Host ripoff with all the ghosts running around and Spongebob frantically trying to get rid of them. It focused too much on a bunch of random ghost characters- at least bring in the Flying Dutchman or something! It did have some good quotes, like Mr. Krabs' line about visiting relatives and Patrick running around the building in circles. But those were really the only things that made it memorable for me. So, 2/10.
Also, did anyone notice Mrs. Puff was the voice of the fortune teller? I was expecting her to jump out of a costume or something.