It just might be me being paranoid, but for some reason I have a feeling some of them are going to lie about the poly-counts if it isn't going to be checked. And even if it was checked, who's to say that the person checking it won't just pass it along because they're a friend or something? Sigh, TSR. I hate you.
There might be people who do lie about the poly counts, but I think there will be enough people that check them once they download something. I know I will be checking. Then they can just report the file.