I like tattoos on girls myself. All but one of my ex's have tatts (And that was my first GF so she was a little young to have any).
I think it isn't so much the tattoo but the girls with the attitude to pull tattoos off. I love Goth / punk / rocker look and like a bit of the emo look even though it's a poor man's Goth and usually without the attitude.
What's important to me is the quality of the Tattoo. I've seen some horrific tats in my time. I remember one WG had this "Porn star" and a massive star over her cunt. I found myself gigling when I was eating her out and just had to close my eyes. She was hot though and dirty as fuck!
The Chav tattoo thing looks daft. Tramp stamps, ex's names or names of their kids on the side of their neck or anywhere! Or the really cliched shit or trite sayings; "Don't judge me till you know me" and that crap.
The other thing tattoos do is give you an insight into a person. If it's good quality and a bit unusual chances are it means something very specific to them. Sure you may not want to get to know a WG but you can get a clue about her from her ink. I wrote a positive about a WG in Inverness goes by the Name of "Kirsty" she was utterly covered. One of the best punts I've had in ages. The first WG I ever became a regular of. Unfortunately she's no longer available.