I think the whole "have a talk with your children" thing is a card a little over-played, especially (and I am not saying who does or doesn't - just speaking to generalities) by people who do not have children. With ISPs threatening to shut off internet due to "piracy" I think it warrants a much closer look at what is going on than just having a chat with your children. As Churchill said, "trust but verify."
Windows Family Safety stinks. I have not been able to manage one of my computers for weeks because Live states it is not available, the time limits often get confused about what time they are supposed to shut off (both amount of screentime and curfew settings). I think one of the easiest ways to manage this is to simply use OpenDNS. They are free (cheap if you want more control) and if your kids are circumventing this (good on them, they might have a chance) then try harder.