Note: Christians should not be getting tattoos:
http://www.av1611.org/tattoos/intro.html, even though many are http://www.jesusfreak.com/enclave/old/tattoo1.html.

Article:
http://www.sciencedaily.com/upi/index.php?feed=Science&article=UPI-1-20060623-14135600-bc-us-tattoos.xml