Doesn't work very well. As a test I went to a porn site and it wasn't blocked until I manually entered it into a blacklist, which kind of defeats the purpose if I have to enter every site in the world that's not child-appropriate

No pierdan su tiempo, no sirve para nada.

Sadly, there seems to be a political bias to how this one works. Innocuous websites from conservative viewpoints ('Faith and Family' just today) have been repeatedly blocked as not "family friendly", yet sites like Daily Kos are a-okay?? Come on! Worse, I just checked to see if Cosmopolitan was able to make it through, and that one -- complete with an article entitled "Your Guide to Self Pleasure" -- wasn't restricted in the slightest.