There is a button that appears in the upper right corner, and when you click it, shows "savings offers". There is a selection at the bottom of the box that invites you to disable this button for various periods, including "forever". Clicking "Forever" removes the box, but the next time I open FF, the button is back. This is not on all sites, but happens regularly on Flickr. Yahoo does not have a solution that I could find, nor does Flickr. Can you help???