I have lent some money to HaoBTC. The interest rate is about 8%. It is not high, but I get some income.
For me it is somehow it is a good amount of rate, and of course you don't have nothing to do but to lend your bitcoin and going to wait for the interest rate and return of your bitcoin. That's a fair enough rate to lend your bitcoin to HaoBTC.
you'll realize what's the meaning of "good amount of interest" when you just investing on HaoBTC and suddenly the price of bitcoin because so fluctuative and the value decreased,wasting time and wasting effort
Those are the risks one should take if they want to grow bitcoins over the time. All investments will come with certain risks so we need to chose what we want it. If you worried about price fluctuations, then you can start a lending partial quantity of your bitcoins and rest can keep for selling whenever you want. But remember not to lend anyone without a proper collateral.