Be careful when downloading software

If there is an option for "custom install" when downloading anything...take it.  This will allow you to deselect additional software that you do not want.  Read the blurb below from the Google Earth download page.

• This site distributes software via a download manager install system. In addition to managing the download of your selected software, the download manager will make recommendations for additional commercial offers that you may be interested in. Additional software may include toolbars, browser add-ons and other types of applications.
• If a sponsored software offer, like for example a toolbar, will be offered, it might change the User’s home page, default search settings and 404-error traffic, in the event the User selects such options.
• You are not required to install any additional software to receive your selected software.