The Yellow Pages, Yahoo Local and Yelp have tattoo shop ratings for shops in and near Port Huron, Michigan. The ratings are user submitted, so they provide each individual's opinion and personal experience with the shops. DaVinci Tattoos, Sarenity and Skin Illusions have reviews listed online as of 2014.
While online reviews can be helpful, researching specific artists and visiting the shops to view an artist's portfolio gives potential customers a better idea of the quality of work provided at the shop. Asking friends for recommendations can also steer the customer in the right direction, as this allows potential clients to view the quality of the artist's work in person.