I agree with pod2be in that I really think that the personal statement does not really amount to much - just be normal. A really good personal statement is not going to get you an interview; however, a really bad one may exclude you from the pool. Do not use the PS as a means by which to express political, social, chemical, or for God's sake sexual preferences. Be yourself, but don't do some artsy weird thing like write you PS in rhyme or iambic pentameter (what is that anyhow).
Just some free advice given to me last year when I was applying.
good luck to you all.
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