So basically coins which added to Polo/Bitrex will most likely be coins which are an stable ongoing project or backed by projects? Therefore the rate of scam coin is low in both exchanges Polo/Bitrex? How about kraken?
Maybe yes maybe no. It's not a basis wherein the coins are stable or having a good future since the trade volumes are created by those investors and hoarders.
Polo is delisting coins that established a low trade volume at a given period of time. That is good so that all coins are sorted out unlike in other exchanges where shitcoins are included in their trading list.