It is nice to see someone be willing to end their show before it jumps the shark and begins losing its fans.
I came across this on one of my student's posts today, so I asked him about it since I admit I've never heard the term "Jump the shark" before. This image and the accompanying article from Wikipedia enlightened me.
Evidently the phrase dates back to the '70s when The Fonz jumped a shark while waterskiing in an attempt to revive the show's ratings. Funny I'd never heard that before. I guess I would have been one of those viewers who had abandoned the show.