I've found that most aerial photos like the one on the site you listed are available for free and uncluttered elsewhere on the net. I actually use them quite a bit in the architectural field. When I do a site plan I like to dig up an aerial photo to see what street improvemnts have been made. Also I can bring the image into AutoCAD and scale it. Then I can draw over top of it to do quick and dirty preliminary site plans. It really helps for locating walks and outbuildings that don't show up on the survey.

Another good source is to check your city or county's webpage. A lot of cities and counties are putting GIS programs on the web, that make extracting information on property pretty easy. Most I have used allow you to turn on an aerial photo behind the layers. Its easy enough to save out the photo from there.

Here's one from my neck of the woods:

http://www.spokanecity.org/services/citymap/

Also on a side note here's another favorite site for when I plan backpacking trips. http://www.topozone.com It prints out pretty poor quality without registering though, so if its one I'm really interested in, I go and buy the USGS 7 minute map. This helps me plan my trips without forking out any money first though. Topozone also has aerial photos for registered users and at $50 / year is much cheaper than the site you listed, plus it gives you the ability to print crisp USGS maps.