Nipple Piercing

I was wondering if anyone could tell me about their experiences with nipple piercings. Healing times, problems, benefits etc.
I've already had a bunch of different piercings. I have my septum pierced, an industrial piercing, used to have a nose piercing, 2 cartilage piercings and 2 on my lobes. I'm used to piercings but from research it seems that nipple piercings are quite different.