Minmatar use tattoos in several different ways for several different purposes. On a brief look I could find the following concrete examples.
Tattoo chronicle, Ray of Matar:
http://www.eveonline.com/background/potw/default.asp?cid=20-09-10http://www.eveonline.com/races/rayofmatar/?pp=background,stories - A temporary naming tattoo, identifying a child and what clan he comes from
- Voluval mark
- Permanent naming mark, identifies also clan and tribe, on the face
- Rank in clan and occupation, on the shoulders
- Occupation (presumably also former occupations)
- Commemorating events of significance and personal achievements
a Minmatar’s tattoos proclaim who he is, where he came from, what he does, where he has been and what he has experienced. They represent a Minmatar's identity as well as his story.
War tattoos chronicle:
http://www.eveonline.com/background/potw/default.asp?cid=mar04 - War tattoos, representing war paint
News item in the Nakugard bombings news arc:
http://www.eveonline.com/news.asp?a=single&nid=1983&tid=3 - Outcast tattoos, used at least by the Krusual
Minmatar tribes basic intro:
http://www.eveonline.com/races/minmatarTribe_intro.asp - The Sebiestors favor simple tattoo forms – straight lines and clean patterns, but flowing, symbolic signs are not unheard of.
- The Krusual tribe uses flowing, often geometric tattoo motifs, seldom cluttered, always orderly and pleasing the eye.
Curiously, I did not find a single explicit mention of Minmatar using purely decorative tattoos. Absence of evidence is not evidence of absence, although this does raise some thoughts regarding the forms Minmatar tattoo high artistry might take.