I know 15 usdt might not be that good, but still you can make a good money if you get into trading. What is it? 

Got a good trading company called Stormgain.com

Wait. You get 3 usdt bonus on sign up and also free mining of 15 usdt every month. It changes as btc price changes. Of course you can't mine usdt, you mine Bitcoin and convert it to usdt. So, the price increases, your value to earn increases. Note: You only get 3 usdt bonus from signing up with this link: app.stormgain.com/bonus/BNS16720731

You can't withdraw your usdt but once making 10 usdt profit from the amount earned, it is yours. You own it, do what ever you want. I recommend holding mining value and withdraw when Bitcoin turns high. 

Thanks for you, to read.