i have no problems with tattoos. i have four of them. Aren't we covered under the new testament. it also could be a way that a person glorifies god. i guess what i am saying is that its up to how each individual person fells or believes.
I am all for tattoos as long as you do it for the right reason. You have to ask yourself are you doing this for worldly desires or are you doing it to glorify god and possibly initiate that conversation with someone else. I also think that if you do it to show you are a christian, that tattoo should be a constant reminder of what you represent.