I am a bit partial to this site as I was one of the developers of the site years ago. It is a GREAT site full of health information. There are a few quirks in navigation but for most you'll not see much of a problem. The content is safe for most kids and written at their level. Parents can also benefit from a read through as the explainations may help you figure out how to explain various health issues to kids
This site is very educational. It teaches you about several topics, like about friendships, illnesses, emotions, etc. Parents should feel okay with kids using this site.
The website overall is an A+. But their is two problems
1. A boy will click an aritcle about a " girl thing" or a girl will click an aritcle about a " boy thing"
2. a young person might find out about a girl thing like a 7 year old!
I found out about this site on my own and it is great! But moms and dads it is probably not the best for kids but if you think you kid is a mature 7 year old and can handle stuff like this SIGN THEM IN!