Question: A friend and I got differently ordered results on a Google search. Is it personalized? Can I turn this off? 

Answer: Google has recently allowed you to sign in for personalization. Look to the upper right corner to make sure that you're not logged in (either of you) and if that doesn't work, delete all cookies. You should get the same results then.
This question from the Yahoo Q&A forum is categorized in the topic: Science & Mathematics