<p>hmmm edited after reading this:
<a href="http://talk.collegeconfidential.com/ap-tests-preparation/500810-reminder-about-sharing-requesting-exams.html%5B/url%5D">http://talk.collegeconfidential.com/ap-tests-preparation/500810-reminder-about-sharing-requesting-exams.html</a></p>
<p>But, I see a lot of trading going on regardless... Can anybody tell how this works?</p>