http://www.realtor.org/home_buyers_and_sellers/buy_now_ad.html
http://www.realtor.org/files/home_buyers___sellers/good_time_to_buy_ad.pdf
I will revisit this in one year's time from now. I'm guessing the market will still be heading down
http://graphics8.nytimes.com/images/2006/08/26/weekinreview/27leon_graph2.large.gif