BITTREX IS SCAMMER DO NOT TRADE ON BITTREX, THEY WILL DELISTING ALL COINS AFTER THEY MAKE PROFIT
Sorry, de-listing doesn't make Bittrex scammer. If the certain coins aren't getting enough volume, then they deserve to get de-listed.
We cannot really blame Bittrex on delisting low volume coins. And I think they are always giving ample of time and notice on its clients. One thing I am disappointed on Bittrex were Bitcoin forks that aren't given like Diamond and many more which are valued with good prices on other exchanges.