It looks like the ever greater specialisation of the dating market carries on. Here's a site devoted solely to tattoo dating, yes, that's right, called Tattoo Lovers it caters to those who love tattoos and the people who have them. If you prefer, it's a site for tattoo personals. (Which, I have to admit, rather reminds me of the old pick up line....I'll show you my tattoo if you'll show me yours).
The site is clean and easy to navigate, has all the usual abilities and options, like geographic search and so on. The only difference to a more regular dating site is that everyone there either has tattoos or likes people who do have them.
If that's what you're into then it looks like an excellent place to go visit.