Tattoos are more common than ever among the general public so it's not surprising to see them more often on WGs now.
Some can have a darker significance, some are frivolous. I don't really mind, I focus on the fucking when I'm with a girl! If I see an interesting tat, I do compliment them on it and it has led to some interesting conversations. Plus it makes them feel more of a human if you're taking notice rather than treating them as a cum receptacle.