This is interesting. Base on exchange owners feedback, surprisingly Bittrex has more negative feedback than Poloniex.

Richiela (Bittrex)

https://bitcointalk.org/index.php?action=trust;u=96390


Busoni (Poloniex)

https://bitcointalk.org/index.php?action=trust;u=139578


Bittrex becoming too greedy than Poloniex. From trusted to busted.