My lesson here is that if for whatever reason its not working, and cookies are not being deleted, as per browser data in the settings, click on RESET TO DEFAULT button for the extension. That seems to correct everything....although I still cant figure out why for the life of me it wont remove the two domains fuckme.com and fuckthem.com . I think its because if page doesnt display, then cookies are installed, yet browser still indicates that a cookie has been saved...hmm....