Interesting post. I was about to post a similair thread. 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. I was wondering if anyone of you uses: https://www.coincheckup.com Supposingly they researched every crypto coin in the scene based on: the team, the product, advisors, community, the business and the business model. They even score the coins stengths. Check for example: https://www.coincheckup.com/coins/Steem#analysis To check Steem Detailed report.