Founder Mark Zuckerberg just unloaded 41.4 million Facebook shares for $2.3 billion, ensuring that even if the stock price collapses, he will remain wealthy. Insider selling is, traditionally, a sign that a stock is overpriced.

Tech stocks have returned to bubble levels, thanks to PR, weak financial journalism and cheap credit. Source: AlJazeera

Tech stocks have returned to bubble levels, thanks to PR, weak financial journalism and cheap credit.