Why not you shouldn't see the amount you get you should see the return if you invest 0.003 bitcoin and get 0.0006 in few months the return is really less around 2$ but the percentage is 20% which means if you put 1000 you would get 200$ this percentage will surely encourage your mind to invest more next time
Indeed it is about profit percentage , but in this case it is clearly about investing small amount.
You invest 5$ and get 20% in return which means you will have profit of $1 isn't it?
But again just ask yourself is it really worth? I don't think so!
Yes any investments always make sense it will all make yield like of that bigger investment. but what really matters is the return of your investment and the time of returns and the risk involve, the greater the investment so the greater your yield profit. but investing in smaller amount although the yield is not as high but you can guarantee that is not phrone in high risk.