I actually just met someone today who does that for a living. I knew they were out there, but had never met anyone who knew anything about it until today. There are actually mortgage lenders who buy these in bulk, carry an interest only loan and sell it to normal people like us who want to buy it for 30-50% of appraisal. They buy such a large quantity of them that they buy them and sell immediately for about $2000 more than they bought it for. Then they sell them to high volume buyers who usually carry an interest only mortgage while fixing it up and selling it. If you want to just talk to someone who may be able to refer you to someone in your city, you can go to
http://www.loanquotelive.com/ . The guy I met was really helpful and willing to explain the whole process to me. He only works in KC, but I'm sure he could tell you how to get involved in other cities. They have a toll free number. . . Good luck! I am thinking of getting involved in the very same thing myself. There are a TON of foreclosures right now because of interest rates going up and all the 3 year ARMs that are coming due!