A crazy Facebook deal and trouble over the "Gruscheln": studiVZ rose at an incredible pace in the 2000s to become Germany's largest social network. This drove its US competitor Facebook crazy. So much so that studiVZ founder Ehssan Dariani and his co-founders met Mark Zuckerberg in Silicon Valley and were presented with an offer that would go down in history. But a rise in ecstasy was followed by a dramatic... see more