As another commenter here pointed out, it's <i>preferred</i>, not <i>correct</i>. This is the old prescriptivist vs descriptivist debate, as seen among linguists. (Disclaimer: I am not a linguist. I just read Language Log.) If you're fretting about the correct this and the proper that (prepositions at the end of sentences, "whom" instead of "who", and so on), you're a prescriptivist, and you may (note, I said <i>may</i>) be making up rules where no rules are needed. I prefer descriptivism (as in: "nauseous" now means the same thing as "nauseated", which is different from its old meaning of "nausea-making", because that's how it's used).<p>(Edit: "different to" sounded wrong. I could never remember which way that goes.)