Invasion of privacy?

I saw a Google camera car this morning which reminded me that there has been quite a kerfuffle recently about Google's Streetview with people complaining that it's an invasion of privacy. Frankly, I can't really see what all the fuss is about. There is nothing shown that can't be seen by anybody walking along the street. In fact, Multimap.com is actually more intrusive as their bird's eye view shows back gardens as well. On the subject of photographing public places, I have come across an interesting site, www.geograph.org.uk, which is aiming to show photos of every Ordnance Survey square in the country. I wonder if other countries have similar projects?