Sandra Kelly of 3M says that whether “Google makes you stupid” or not is up to you. “I don’t think having access to information can ever make anyone stupider. I don’t think an adult IQ can be influenced much either way by reading anything and I would guess that smart people use the Internet for smart things and stupid people use it for stupid things in the same way that smart people read literature and stupid people read crap fiction.”
ars technica

I don’t think I could have said it better myself.