If anyone including children does make search on porn, sex, adult etc, They will get easily meaningless sites from that search. I mean most site expects money and just not suitable for kids. I guess it's really complicated!!! kind of weird!!!
One of the most popular sites in the world, almost everyone has heard of Google.com
Be aware though, that not all sites found in the search browser can be informatively correct or legitimate (That's why everyone should use WOT).
Images or sites can sometimes be explicit,, so always monitor what your child does on the web.
WHY would Google give us so much information and get so much information from us JUST for TEXT ADS? A global scheme is in the works of Google, go to donttrack.us for more info, and also search " masterplan the movie "
Do NOT use Google. They send your information to other evil corporate websites. Google has been accused of having detailed information for each google service you use, Youtube, etc. It says in their User Agreement that they may take information from you whether you like it or not. Like I said, spread the word, and tell them to spread the word as well, because GOOGLE. IS. EVIL. They know what you're searching! Go to donttrack.us for more info.
Google.com is the best search engine, It's useful and safe. but its still a search engine so be careful when you click a link.
In addition, Google also provide a lot of other good services. Such as Gmail, Google Maps, Google Plus...