They all devolve into the same areas. That is, no matter what you use, a child can find the cracks in the protection.
The easy fix seems to be dismissed by almost all that ask your question so my question to you is simple.
Why not read the prior discussions to save yourself time?
Such as http://forums.cnet.com/7723-6132_102-616501/what-are-some-good-ways-to-monitor-kid-behavior-on-the-web/?tag=contentBody;threadListing
I see almost all the same answers and suggestions every time this comes up.
I have a very small child and I'm preparing an older laptop with Windows 7 for her, with all the bells and whistles that kids enjoy, while trying to block any browsers or other internet programs, as well as system setting so she doesn't end up killing Windows or the pc. The big problem here is that Windows Family settings does not achieve everything I have in mind. There are some companies who make some wild claims, like they can offer an veritable operating system for kids like these guys http://www.magicdesktop.com/ and before I get into this, has anyone had experience with this product? Is it safe? If I ask them, they'll surely say yes, so I'm looking for some non-biased opinion and perhaps any suitable alternatives for me to consider. There is really not much in the way of kid-friendly solutions out there, which is rather depressing.