Cryptocurrency has become an increasingly popular investment in recent years, but the majority of coins have been priced extremely high. Fear not, there are still plenty of altcoins under $0.1 that could make an investor a great return. Here are the top 3 altcoins under $0.1 that you should watch out for. The first coin is Ravencoin (RVN). Ravencoin is a digital asset platform that focuses on the transfer of assets from one party to another. It has a strong community of developers and contrib...