Cryptocurrencies are making computers more expensive

Unless you've been hiding under a rock, you've probably noticed the spike in interest in cryptocurrencies. If you need a quick refresher, a cryptocurrency is a kind of decentralized digital or virtual money. It is highly encrypted, so it can't be tracked or traced or stored in your favorite banking institution. You can't put it in your pocket like a dollar bill, and most coffee shops won't accept it as payment, but it still has value. Sometimes, a lot of value. For instance, one of the most...