YOBIT is such an small exchanger, you should use bittrex / c-cex / cryptcy / poloneix for altcoin trading which all have decent daily trade volume.
this is an addional information for me thanks . I will try these trading services
fair warning, stay away from c-cex as theyve had some shady activity recently: https://bitcointalksearch.org/topic/c-cexcom-scam-1128880
they pulled an ico scam.
Be aware of Cryptsy too, they are doing "selective scamming".. just try to search "Cryptsy scam" on Bitcointalk and I'm sure you will find something about it.. They scammed 1 guy for around 160 BTC ( I'm not sure if it was 120 BTC or 160 BTC ).