My concern with BTCJam's no collateral loans is that there is nothing stopping someone with a Judgement on their record from telling the Collection agencys to take a hike and never paying a dime back.  It's a bad mark on their credit but if it's shot anyway, who cares?  The laws are definitely in the borrower/scammers favor.  I personally would never seek interest thru bitcoin loans.  What if you loan 1 BTC and the price spikes to 5K, and Bob can't possibly afford to buy 1BTC to pay you back.  It's just rife with problems, but I hope everyone gets paid.  I did Prosper.com for a bit and ended up breaking even after one scammer just walked away from a $1300 loan. No money collected.  All in all, I experienced a ~20% default rate on my loans, and Prosper didn't do dick about it.