Click the broken cookie and all cookies for the current site will be deleted
I hope this will be as useful for you as it is for me...
Click the broken cookie and all cookies for the current site will be deleted. "I built this extension because it was simply missing. As a developer I need a quick way to clean all cookies for the current site." Removing cookies for a search engine will ensure that it doesn't change the results based on what it thinks you want to see.
This is a very handy tool to quickly clear all cookies for the current site, simply click the button and they all get deleted. The consequence of this is that sites will loose your browsing and search history. In practical terms that means search engines will not show you customized results after you click the button.