I feel it is one of the most promising smaller exchanges out there. If you don't have an account yet, feel free to register and try it out.
ref link https://cryptohub.online/?ref=7775
no ref link https://cryptohub.online
The exchange online that has the lowest btc withdrawal fee that i know of - 0.0002 BTC (other exchanges are a lot more)
mining pools for several coins (cpu only - unitus coin, gpu and asic too)
daily 'prediction' contest
If you register please set 2FA (2 factor authentication)- it is always an important measure with crypto exchanges in order to keep your funds safe - it does matter a lot, keep this in mind with all kind of sites you register too.