Is Google Earth danger to security?

Anybody who has used Google Earth knows what you can do with it. It provides you with street to street imagery of a number of countries and cities around the world. I should admit I find it really kool to watch the bird's eye view of my city.

Recently there have been quite a lot of concerns raised in the name of security? A lot of secure places can be seen from these images on google earth and a lot of hue and cry is being made on the matter of security?

First of all my disclaimer >> I am not a expert of security. But what i would like to emphasise is, If a commercial organization can get these images for a price, will a rival govt not procure these images and have already known about these "secure" installations?

The only different thing is instead of the data being available to a few select individuals or organizations, now it is available to everybody. Is that wrong?