Good post. Thanks for bringing this to our attention. Sell the coins that you know nothing about. Do proper research on any coin you buy. If the market falls at least you can hold your coins knowing they have a long term future. Personally I always use: https://www.coincheckup.com Since I use this site I make so much less basic investment mistakes. Check for example: https://www.coincheckup.com/coins/Numaraire#analysis To watch Numaraire Detailed analysis.