We've had it in the past, so all of my information is several years old. It does a good job of filtering, but the (older) kids objected that it interfered with the flow of the movie. We did have the filters set pretty high, though. There are different categories that you can choose to filter, based on your comfort level -- so swearing can be set separately from violence, etc. I did have problems with downloading the filters on my Mac, though my husband's PC didn't have a problem (hopefully that's gotten better). You will need to download new filters regularly to keep up with new releases. It was a very useful tool during a period in our life.