YouTube star Erik Hoffstad is one half of the duo behind Letsgotoclass, a popular YouTube channel that produced the controversial "Being Productive on Salvia" series, among others. He joined iMedia for a discussion about viral tipping points, good vs. bad attention, and the next step after YouTube fame. iMedia Connection: Was there a viral catalyst for your videos? What about "Driving on Salvia"? Did you know that you're mentioned in a New York Times article and on salvia's Wikipedia page? Do you think that has helped garner views? Erik Hoffstad: Before I made the Being Productive on Salvia...