Yobit's differential is the number of shitcoins that they accept. If go to the Altcoins board and take a look at some of their ANN threads, you will see that 90% of them are listed in the Yobit exchange. I imagine that most bounty hunters that accumulate those shitcoins use Yobit to make a quick buck (besides maybe pumping and dumping those shitcoins).

But if you are using Yobit as your main exchange to trade BTC/BCH/ETH/any legit coin that is available somewhere else, then you are making a big mistake.

I remember some guys from my local community trading a local altcoin there before Yobit put the wallet in "maintenance mode" for more than 4 months and locking their coins there. I don't know if they recovered their coins later, but this is a good enough reason to stop using Yobit.