Phil and Andre talk about peer to peer lending sites, such as Lending Club.
Lending Club let’s you loan and borrow money from other individuals “directly”. They manage the collection and credit checks, and you lend the money.
Neither of us are eligible to try the service out, but from reading the literature, even they admit you are best diversifying among many loans. You’ll get a chance to see why people need the money and what Lending Club rates the debt.
This should be considered a very high risk investment, but could be a potentially interesting addition to your portfolio.