Granted, child porn is illegal, and it should be illegal
Pft~ Says you. What's your definition of a 'child'..?
As for the rest:
Concerning user-searches; no search engine should be held responsible for
other peoples actions. 1) They don't make the sites and 2) They don't force people to search for "Kiddy porn".
Paid advertisements on the other hand: :\ Really, they're accepting cash from businesses to advertise a product, they would have ready access to what material the business is trying to advertise and the only reason why they wouldn't check every ad is pure greed.
My personal view of course is all thumbs up, and I know first hand that
certain cp sites are indeed blocked by google (mainly "gray modeling") and can be a bitch to find. If they have no legal obligation to block these sites, why would they do it unless they're moral-fags?