I think  there's no reason to an exchange do this, they wil get profit anyway. Now i'm thinking about the lags or DDOS they talk about. Poloniex for example, i like to trade there but in the last month was so hard to make anything (trade, withdrawal, stop-limit that don't work, etc...). Should this deliberately?

OBS: I don't want to put Poloniex integrity in question here, is just an example.

How much NAV (minimum) i need to make a profitable stake ?

I have the same doubt?

It would be good to know to calculate the investment

In poloniex do I need to have BTC to receive STRs? What I have are all in other currencies.

I started to follow now, but I've seen the great potential. I already bought some 

Seems interesting. I will follow!

thanks for information

what's up? The price went up fast. Any news?