So, you're watering your lawn, and a notice a car drive by slowly, the driver looking at your house. Suddenly, he / she takes out a digital camera and snaps a photo of your home - and drives off quickly without a word.
What was that - a drive-by shooting?
If you ever witness this strange behavior, don't automatically run for the shotgun. It may be an appraiser just doing his job. Appraisers sometimes are required to take photos of homes that have sold recently to place in the appraisal report. Taking pictures of homes from a public street is perfectly permissable, even if you are not an appraiser. It is understandable to be concerned, and by all means you have the right to investigate. If a property owner is visible when I am taking pictures, I usually get out of my car and explain to them the situation, and they are more than happy to comply. One homeowner even wanted to pose in front of her house!
Many appraisers have a heavy workload and don't want to take the time to do this, which saves time but may result in a city wide chase scene. I prefer to take the time.