Note that many websites have their own advertising, unrelated to adware.
From the EULA:
The Toolbar selects which ads and offers to display to you based on several factors, including: URLs associated with webpages you visit, search terms that you type into search engines and into the Toolbar, your local zip and/or country code, and HTML content of the webpages you view.
Note: WhenU has made changes in distribution practices and to our knowledge no longer uses third parties or bundling to distribute their application. Distribution appears to be in-house only and bundles only contain WhenU products. Research shows that WhenU now makes it clear that advertising will be shown in the End-User License Agreement (EULA)
Users who desire this shopping application should not remove.