With thanks to reader David Torrente, who pointed out some that are new to me, here are some blogs following the housing bubble and its deflation: http://bubblemeter.blogspot.com/

http://housingpanic.blogspot.com/

http://thehousingbubble2.blogspot.com/

And from the MSM:

http://walkthrough.nytimes.com/

http://www.businessweek.com/the_thread/hotproperty/

I've been looking at a few of these blogs occasionally, and they are doing a much better job at covering what's going on in the housing market than are major media outlets (they do tend to focus on the bad news, but except for the fact that long-term interest rates have stayed pretty stable, there hasn't been a lot of good news for the housing market since the Summer.)