What do you think about decentralized exchanges? Positives/negatives

[natasha-lev]

I tried to use idex. I am impressed. Didn't calculate the fees on transactions and gas fees, but I had very good experience with interface. It was easy login and easy sales and purchases.
 I only didn't like how the orders work. And minimum 150 USD order trade.  Also noticed that someone may destroy your order by buying only few dollars from your order, and when your remaining order is below 150 - it is destroyed.