Well, i consider small tattoos at some very special places as a matter of taste. I would not even like a small tatoo on my body, but if someone likes it, it's okay to me and does note make him strange or anything, as long as it is on the ankle, neck or hip for example.
When a tattoo or several tattoos cover whole body parts I do not consider it as tasteful, no matter how beautiful the tattoos are. Usually such people seem strange to me, I simply can not understand how you can ruin your body like that. But well, let them do what they like, I'll never understand it though :/