When you consider that the street view cameras can see no more than what anyone could see walking down the street, I don't believe it is an invasion of privacy.
If they used telephoto to look into your windows, that would be an invasion of privacy. But I don't think that's the case.
The views are very helpful when you are trying to figure out where you are going, or what it will be like trying to navigate a busy intersection and so on. I think it's a great idea.
I don't feel like it's much of a broadcast though, as those views are buried in millions of others and so not likely to be found by many people.
(I was going to attach a picture from street views of my house, but they haven't done my street yet! I'm so bummed!)