A 24-year-old Spongebob secret is still keeping fans up at night. SpongeBob SquarePants has been on since 1999. Since then, there have been 15 seasons and 311 episodes. And it is still on so these ...

A fan has claimed Nickelodeon used his SpongeBob SquarePants artwork without his permission. Matt Salvador, 17, says the art was featured in an advert for the show which was aired in June.