12 questions you were too embarrassed to ask about Bitcoin

This has been a big week for Bitcoin. On Monday, the Senate Committee on Homeland Security and Governmental Affairs held the first-ever Congressional hearing on Bitcoin. Later in the day, the currency's value reached an all-time high of more than $800. That has left a lot of people scratching their heads. What's Bitcoin? How do you use it? And why would anyone want to? Read on for answers.

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