Last week I was interviewed by BBC World Services . The topic of the interview was Trump and Twitter. One of the questions they asked was whether the fascination with Trump's tweets would be the new normal for politicians. My answer was no. Historically, large social media successes have mostly been one-offs and have not been repeatable. Here are a few social media phenomena that were supposed to change everything and changed absolutely nothing. First was The Blair Witch Project . It was a super-low budget film that became a smash hit through clever use of social media. It was hailed as the turning point for movie marketing, and was "proof" that movies would no longer need expensive TV advertising. Tune in to the Super Bowl to see how wrong this turned out to be. Next is Zappos . They built a very successful online shoe retailing company (eventually bought by Amazon) on the back of Twitter. This was supposed to disrupt retailing forever as clever marketers would use Twitt...