Wachovia's economists just released their monthly commentary on the housing market, and it comes with graphs, charts and maps (all right, map) galore for the discerning wonk. (Click on the PDF link for "Housing Chartbook -- October 2007.")

Speaking of investors, Wachovia has this to say about their effect on housing:

Existing home inventories remain high and part of this glut reflects new homes purchased by speculators that had expected to flip them before construction was completed. Many investors are unable to cut prices much from current levels while builders can cut their prices on competing homes or add amenities, which is one reason existing home inventories remain high and prices remain sticky.