I think this is realy more of an issue for osteopathic programs. As I did rotations at my local place third year and a far off land fourth year and both wanted me to sign with them (with the far off place going so far as to have me sign a letter of intent - which made me uncomfortable as I am sure it is against match rules). However, I only did two allopthic audition rotations and at one it was a good experience as I found I hated the program and didn't apply. At the other I loved the program and got constant reassurance from them that "I was a good fit, and they hoped I would rank them high, and they looked forward to seeing me for three more years, and what size coat did I wear." Well be careful about these reassuranes, because guess where I ended up, and maybe this is because I suck, but I sure as heck did end up there. Instead it was another program I never rotated at, but happened to like once I interviewed there. SO BE VERY CAREFUL ABOUT THESE ALLOPATHIC AUDITION ROTATIONS. Don't let it influence how you rank them too heavily, as people are not always truthful in their assurances. Just my $0.02
Best Wishes
The Mish