If your a parent and hate to know if your child is surfing online to visit pornographic web sites. Then this program will be great for you. It requires some configuration to offer the proper protection but once you configure it correctly. You will not have to fear that your child is trying to view these sites. And if in the case your child is getting curious, you can be alerted to get email alerts that they are trying to access a prohibited site.
Windows can be setup to block out pornographic sites but it's still vulnerable and not guaranteed. Here are the instructions to setup via windows.
Open Internet Explorer -> click on Tools -> Internet Options -> Content tab -> on Content Advisor click on settings -> make sure Language, Nudity , Sex, and Violence it at Level 0 and click ok. This should prevent the computer from going to pornographic websites. But like I said it's no guarantee.