I used Webwatcher after my kid started reacting differently when i was around her while she was on her mac laptop. I was able to see her internet and Facebook without looking over her shoulder or sneaking on to her computer.
Someone like me cant set something up to work on my home network to be able to see what she is doing so using something that did it from the start was nice.
Plus i could see if she was doing things she wasn't suppose to while she was at school or at her friends houses. Its been about 9 months and I haven't had an issue yet.