After I myself had become a Phoenix blogger, I wanted to know who else was doing the same. Good luck finding anyone blogging about small business in Phoenix, but there are plenty of realtors, t-shirt designers and the occasional accountant.
The only ray of hope seems to be ReadPhoenix. At the minimum, it is exclusively blogs AND it has some variety. There are some must reads here. Escape From Cubile Nation is one. Phx411 is another. A must see is I Do IT Digital, if you are not familiar with video blogging.