Note that many websites have their own advertising, unrelated to adware.
Bald Eagle Screensaver bundles adware and other potentially unwanted softwares like WhenU Products, My247eShopper etc.
This also adds a Browser Helper Object to the Internet Explorer.
StartPage changes to http://www.321search.com
From EULA :
Often, such ads and informational messages will be published to computer screens on behalf of those who are competitors of the Web pages users may be viewing, or may have recently viewed.