It seems to work half the time at least. But one of the things I dislike most is not being able to whitelist domains. For instance, I use a service called New Relic on my web servers to gather usage and performance data. To view the data, I need to be on their website. But this plugin seems to block the entire site from loading. It would be nice if - while on the site - I could click a menu option to whitelist the domain.