KidZui - Web Browser for kids

My 4 and half year old drives me and my wife crazy with his browsing habit, especially after school close. He knows how to start safari and go to youtube and search for "transformers" or "spiderman"( he knows if he types "t" in search box, first one would be transformers) to start watching video clips. We don't want to be strict about it because i don't want to raise him as "computer illiterate" or learn how to sneak in at same time, so we needed some protection. I know our trained software professionals must have thought about it and developed some kid's only browser, but i couldn't find one, that effective and intuitive. Today my wife found one from NBC Today Show, the kid browser KidZui, this is really highly intuitive and must have one. Very funny to see their team bio also. It is subscription based $50.00 / year.It has each kid's own avatar and over 600,000 kid friendly websites.The websites are regulated as per the age.So as soon as my son logs in, all his favorite character's websites pops up.He loves it.