Picasa and Panoramio are under protection of a german law allowing the free depiction of public viewable property if its non-commercial and only for private purpose.
The twenty cities and Oberstaufen have roundabout 8 million private and commercial properties, compared with 244.000 blurred ones result in the 3%. But that didn't work, cause large buildings with owner-occupied flats are blurred if only one of them asked Google to do so. Google didn't blur single condominiums, only complete buildings. I am waiting for the first complaints about that.
Our landlord advised all tenants that requesting a blurring on Street View will be a violation of his property rights and will result in indemnity cause only messy buildings and such of fringy social groups are blurred. A blurring will result in a loss of value and usability.
His estate management had done the same arrangement for the condominiums.
And don't forget, there are millions of people in Germany thinking that Street View is something like a live webcam gawking through your bedroom window.