The Bing Wallpaper app displays different images based on geographical location and user preferences, resulting in varying advertisements for users. For example, one user noted that only one out of four PCs showed the Harry Potter theme, while the others displayed a serene view of Bamberg. Microsoft has the right to display ads within these wallpapers, a detail that may not have been clearly communicated to users. The app is integrated into both Windows 10 and 11 and aims to enhance user experience with daily updates to desktop backgrounds, though it now includes promotional content.