I think everyone knows about the so-called "Gold rush", which swept the world in the mid-19th century. Then the mass mining of gold began in California, Africa, Alaska. People's minds captured the idea of easy gold mining and instant enrichment. Hundreds of thousands risky guys rushed to seek fortune ...

History made a circle and closed the ring. Nowadays, our age.
The same number of enthusiast, trying to make their capital by building a successful startup, as almost two centuries ago. Not everyone succeeds, but in the "rocks" are such nuggets as Facebook, Instagram, YouTube, Twitter, Skype, Evernote, Foursquare ...