Miriam Bernstein started another round of discussion regarding using private home photos on AR and Localism.
After a couple of hundred words in response, I thought, "Gee, this is a post of its own."
I post neighborhood profiles with photos of homes. I have hundreds of photos in my AR and Localism blogs, and some posted to Localism. I have a couple thousand up on Flickr.

Heere's my mindset:
I have found that people moving to the area, who have never spent quality time here, absolutely hunger for local information, and photos deliver it. As a Cary, NC, real estate agent, I try to serve them and deliver it.
I take photos openly, no long lenses. I wave to folks, and chat with them. One feller said, "Let me get out of your photo." He was very proud of his new home, and tickled that I was doing a profile on his neighborhood.
Legally, I believe I have the right to do that if taken from a public place, like a street. If they have copyrighted the image of their home, then I believe I don't have that right. Lenn Harley, the Goddess of Copyright, and a couple of fellers from AR photo groups helped me establish that position.
I attempt to avoid information that can identify particular owners or homes. I try to avoid open garage doors that show personal belongings. I try to absolutely avoid showing kids.
If I see an agent's For Sale sign in front of the house, I pass. I would be fine, if another agent promoted my listing and sold it, but Old School says it is improper, and I avoid it with others' listings. I am less careful with new construction, particularly in subdivisions where the Builders' reps are just tickled pink with any exposure they can get.
All that said, if a homeowner calls me, or asks me what I was doing, and wanted their photo removed from the internet, I wouldn't stand on my "rights," do or die. I would remove the photo immediately. I have been asked why I was taking photos, and I give a business card, tell people who I am, that I am working on a community profile, and at this time have never been asked to remove the photo.
The curious question to me is the applicability of my personal guidelines if I shot the house last year and posted it and this year it goes "For Sale." Did I photo another agent's listing? Again that agent could contact me with the photo url, and I would take it down immediately. I'm not curious if I would "have" to take it down. I just know I have thousands more homes to photo, and that just isn't one of them at this time.

In our area, home photos are on the public records, so I don't see why posting a photo should be a problem. Also, all of our homes are on Google Earth, right?