Recently, Bitmex becomes one of the biggest exchange for margin trading, and it is attracting many traders. In the downtrend of bitcoin, it is also a good channel to make money.
Otherwise, margin trading is very risky, it is ONLY for experienced traders. To trade on the margin exchange, the most important thing is that traders have to be always putting stop-loss on their orders.
I saw people are joining Bitmex, what do you think?