I have just setup network level filtering for YouTube as described here
https://plus.google.com/+DeanGrell290/posts/aHnwv9ywVkp
When accessing YouTube without being signed into the GAFE account the choice of videos is now much more restricted, but there are still some videos that I would expect to be blocked that are accessible. Is this expected behaviour when using restrict.youtube.com?
For example a quick search for Justin Bieber returns a YouTube playlist, clicking on that most videos show as restricted but 2 videos are still available.