i've used this on my kids ibooks and on our shared imac for over the past year. while i've had many difficulties setting it up and really had to read the documentation, i have to say that the program works as advertised and gives me peace of mind with my kids on the internet. the japanese to english translations can be extremely rough and the understanding of any email requests are sometimes quite limited (billing questions posed a serious issue, like they were translating using babelfish back and forth...) but they constantly update the program and are active which is worth something. again, i still use it and paid again for another year. and the documention is pretty complete - although finding what you are looking for can be a struggle.