People should avoid Huobi.
If you look at how poorly people are being treated by their support desk, and that in broken English, you don't even want to hold one single Satoshi on that exchange. Even free trading shouldn't be reason to trade there.
Another thing is that they also frequently lock accounts and force people to go through a verification procedure, and with all aforementioned in mind, plus that people don't know much about Huobi, it's definitely a no go.
I'm not saying everyone experiences these problems, or will experience them in the future, but they definitely shouldn't be something you want trust your information to ~ better safe than sorry.
Yes we need to avoid these kind of exchanges even they offer their services for low cost because paying little extra is better than losing all your funds to an scam site.Even some reputed exchanges turned into scams lately once they got good number of holders so we need to pick the best exchanges for trading.