Blind dates are scary commitments where you gotta trust the judgement of who set you up on them and I doubt that include a computer algorithm, otherwise the minutes are gonna tick by like Chinese water torture.
Aside from her having obvious turn offs like a uni-brow, I'd say her being really shallow, saying shit like, "yah, like that's hot 'n' stuff!", full of the wrong politics, over-the-top ink or piercings, emphatically agreeing with everything I say to the point of it obviously being forced, a lack of general knowledge, i.e. her thinking Montana is a country in Europe, and her being unable to allow a moment's silence where she doesn't need to fill it in with meaningless babble.
Of course that last one is minimized with a few drinks so not a deal breaker.
Now with that all said, if she's got an exceptionally large rack and looks cute while laughing easily, I honestly wouldn't mind her being dumber than a bag of hammers.
I can be shallow, not her though lol.
