Well, I'm the same, I go for the personality rather than the looks. It doesn't matter what they look like if they have a great personality.
And I agree with Cherrylicious about not being attracted to a gorgeous guy with a horrible personality. Sadly enough, it seems a lot of people are shallow when it comes to this thing and only go for the looks.
I guess I could put some things down I don't find particularly attractive.
Someone who's either grossly overweight or underweight. Think Gollum-type body and the fattest person who's ever lived in the Guinness World Records book. LOL
Bat ears.
Big/crooked nose. Though I have to admit I've fallen for a guy who does have sort of a big and crooked nose, and wouldn't normally be seen as attractive. ^^;
Someone with massive, flared out nostrils.
Bad teeth. As in really crooked with loads of plaque and stuff.. >
Hygiene is important. Dirty nails, teeth and ears and stuff aren't nice. And neither is bad breath! I once knew a guy who had really horrible breath, it was like.. what crawled into your mouth and DIED under your tongue?! It's easy to say that about him because he was also a nasty person who talked about friends behind their backs and he stalked me and harassed my best friend. T_T
I hope some of that helps because I can't think of anything else that isn't too attractive.