"Our latest episode has been viewed over half a million times, " Korpela tells CNN.
CNN: Skiing's 'dark arts' to invade Olympics
"We try to choose our spots so we aren't too close to people's homes, " says Korpela.
Meet the Hannula brothers -- Ilkka and Verneri, both 19 -- their friend Juho Kilkki, 20, and cameraman Janne Korpela, 18.
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