Jeśli chodzi ci akurat o ten gadżet to w zasadach użytkowania jest napisane:
Cytat
You agree not to modify or remove the "gadgets powered by Google" text and link or the "+Google" button or other promotional text or images provided by Google with the gadget code. If your site shows a list or directory of gadgets, you must provide attribution that identifies gadgets. You understand and agree that Google retains the option to replace the "+Google" button with content, including advertising or promotional content, that occupies the same space and position on your page when you display the gadget.
Co znaczy, że nie możesz usuwać reklam dodawanych przez google.