Check out bfxdata, as of lately returns in BTC are about as high as in USD percentage wise.
They are actually higher. I bought BTC to lend them for that reason.
A brave soul, taking on an significantly added level of risk
Aye, high interest rates aren't particularly useful when the value of BTC is going to hell... And I'm afraid bitstamp has caused the last bit of confidence large investors had to go away...