Username: 666

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Username: 666 (also known as sm666 on Nico Nico Douga) is a video pasta by nana825763. It shows what happens when one searches for the username "666" on YouTube and then refresh the page a few times.

This pasta has actually created a few rumors, one of which is that the original "666" account contained a virus that changed all text into sixes.

Due to the popularity of the video, nana825763 created a "sequel" of sorts called Another YouTube