While savvy investors have long profited from dealing in distressed properties,
the soaring rate of U.S. home foreclosures over the past few years has
attracted mainstream interest and crowds of new bidders.
The experience of all these novice investors jumping into the market is likely to end in tears, as prices keep falling in the years ahead. Those 30% discounts (from peak prices) won't look so good when prices drop another 30% to 60%. There were plenty of people who bought Japanese real-estate in 1994, after it had dropped some 40% from the'89 peak, only to find the prices fall much further over the next decade. There is no reason such a thing can't happen in the US.
When we finally do hit a bottom in real-estate, there will likely be such a level of disgust with the market that few people at all will be interested in purchasing for investments.