8. Twitter Rejects Facebook's $500 Million Offer

In 2008, just 2 years into existence, Twitter was proving threatening to Facebook. It came strong as a micro-blogging site. Zuckerberg, who had rejected Microsoft’s proposal to sell off, a year ago, offered Twitter $ 500 million to take it out.

Twitter's founder’s wanted to build their own independent company and even Facebook was offering stock which wasn't that appealing, so they rejected the offer, which proved right. Today, Twitter is valued somewhere between $8 and $10 billion.

7. Pandora Employees Worked for Two Years Before Getting Paid

According to a report by MarketWatch, Pandora's early employees worked without any salary for two and a half years. They even used to gamble at local casinos to keep the operations running since it was struggling to find any investment.

In 2011, Pandora raised $234.9 million in its IPO. Today it's a $1.75 billion company.