This is the first thing I put on a new computer after antivirus. It is a little tedious allowing websites you want to go to (google, youtube) but the permanent exception of allowed sites and the ability to temporarily stop scrips from other sites run allows you to watch movies or other content from websites that are loaded with crap (not necessarily malware but unwanted bandwidth use from non-content providers). Make sure to tick through each site trying to load (be smart, some sites are clearly labelled as ad sites) to make sure you are only opening the pages you need.