It took only a few months for Sally, an executive assistant living in British Columbia, to become Crypto Sally, a Lambo-touting altcoin influencer who makes a living on YouTube videos. She got interested in cryptocurrencies last summer as the buzz around initial coin offerings, or ICOs, surged. She bought some ether---at the top of the market, she admits---and spent her free time researching how to trade lesser-known cryptocurrencies called altcoins, eventually making enough money to quit her job.

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