Lightspeed partner Jeremy Liew said in an interview that cryptocurrencies and the blockchain technology on which they are based are here to stay, but it remains to be seen whether bitcoin will evolve into a mainstream digital currency, according to Fortune. He gave one piece of advice: With enough disposable income, you may want to use 1% of your savings to buy bitcoin. Even if bitcoin drops to zero, it won't hurt. However, once Bitcoin takes off, it will be a joy to watch.