Many high school and college students routinely use search engines like Google to help them with their homework, instead of going to the library. Although many teachers don't like this, personally I think this is fine, provided that students are also taught critical thinking skills. It's much better than relying uncritically on hard-copy library sources. As one of my friends says, "There's a lot of great information on the internet -- and some of it is even true." (Via Plastic.)