I noticed that the Layers Magazine site has a nice tutorial by Sean Duggan on Exposure Blending In Photoshop. I did a post about a month ago that covered specific use of this general blending technique that covered dealing with interior windows.
The thing I like about Sean's article is that it nicely complements my post. Sean's tutorial covers the general subject of shooting and doing exposure blending in Photoshop. In real estate shooting, the crux of exposure blending usually boils down to making a window mask or sky mask for exterior shots that controls how the two exposures are blended, and that is the part that my post covers.