The winter in New York City has not been kind to us here at Tattoosday. Inkspotting is operating at minimum visibility, but we try not to let that discourage us.This afternoon, passing through Penn Station, I spotted some knuckle tattoos on Liz, who gladly complied with my request to photograph them. Check them out here over on KnuckleTattoos.com.The drawback of talking to people waiting for the