GingerV said it very well. I think part of what makes McD so popular with young kids is he always conveys a sense of "fun." I think that's what small children really relate to. I still think my favorite commercial of all time is one of a little boy laughing and laughing at his little puppy trying to lick his face. I think it was a Pepsi ad, but that didn't matter. That laughing little guy made it a great commercial.