Those who continue to inflate the tech bubble will be quick to remind us all of how they've learned from the past. They say that startups these days are focused, driven, and efficient, creating products that people actually use. But is it really making any profit at all ? In a period of less than a year after its launch, Instagram was used by 5 million users, and they had uploaded 150 million photos. But even with these impressive results, it's impossible to ignore the fact that many of the fundamental economic factors that led the first bubble remain."