Buy Steem for 0.00519700 BTC
Sell to internal market for 3.06 SBD/Steem
Sell SBD on Poloniex for 0.00194 BTC
There you go a 15% return in 5 minutes.
I can't do it because I'm already past the stupid daily withdrawal limit.
Have fun :)
Read next
From @scrawl