I do like this ad blocker, but the reason that I gave it only 4 stars are for two reasons. The first reason is there are a couple of websites that I've put on the whitelist but I still have keep turning off the blocker in order to enable the page. If I don't it won't allow me to see everything or sign in to that site. The other thing is more of an annoyance than anything. And that is the pop up every time 1000 things have been blocked. I wish that would stop and if I wanted to see how many pages have been blocked, then let there be something when clicking on the extension if we choose to see how many things have been blocked since using. Other than that, I am happy with this site.