That is very cool, but I bet it's going to open a can of worms.
I presume they're using streetview images to match up the photo you take of a business, returning its location and other information. This brings about some scary scenarios... what if someone "goggles" the background of a photo of some random hot girl on facebook? Within seconds they have the exact address of the location.
Even if it's designed to exclude residential addresses there are some locations that will undoubtedly slip through the cracks, and limiting to business locations only will still not provide full "location anonimity" - someone could still figure out your town or a common meeting place by finding businesses in the background.
Scary stuff.
