I've been hearing this a lot recently. And I too used to think it was true. And it is. But there are guidelines.
Saying ?Chicks dig scars? is excatly like saying ?Chick dig musicians?. Both are true. But in the same manner girls like guys that can play the piano, girls like scars that are 'bedded in'.
Example.
If I was living with a girl and learning how to play the piano, I would annoy the hell out of her. Playing 'Summer Fayre' over and over again while practicing will surely make you better. However it will make the girl want to stab you in the fingers and/or eye with a particularly pointy metronome.
I currently have a scar on my chin. It is brand new, not vastly attractive, and the shade of pink that I came here to dispel from my body. Rather than attracting girls, it will only act as more of a deterrent.
Fast forward a year.
I can play Wonderwall on the piano, I have learnt the John Mayer version and hearts literally melt when I perform. I can also throw out the Gummi Bears theme tune on demand. It is surprisingly effective at raising a laugh.
My scar is nicely settled down. It is no longer raw and pink, but a story laden gash in my tan that tells stories of my past. It is a very personal tattoo of where I've been and what I've done. When people ask me how I got it, I lie and tell them it was from boxing.
Sure it might end up helping me. But like growing your hair to look cool, it's going to take time.
(any comments about my once long hair not being cool will be met with the shaking of my head and me imagining you with the word 'infidel' in four foot high neon letters above your head)