Unfortunately, together with the 25.000 positions filled by the main match every year, there are around 10.000 applicants that remain unmatched, mostly IMG's. To receive the "you did not match" message is indeed a terrible experience; anger, discouragement, and frustration might fill the minds of these candidates, and those are very understandable feelings after all the effort made. If you are one of the unmatched applicants, try to remain focused so there are still a few things that you can do to get a position.