Okay, from a guy perspective, I love doing anal. Is it because of the taboo thing? Probably somewhat. But it also feels so damn good! Mostly, I've been the penetrater, but lately I've also been getting the urge to get fucked myself. I've never been able to stimulate my prostrate from the inside (had my partners' fingers and a dildo up there before to try it), but I'm hoping someday to find out what it feels like.
Anyway, orgasms from anal.... do you get them? how do they feel? same/stronger/weaker/different than vaginal/clitoral orgasms? My experience has been that there are a lot more women that enjoy anal than people would think. I know it's not for everyone, and that's cool too. But here are some of the things I've done that's helped to result in orgasms (sometimes multiple ones) from my female partners....
Let her set the pace, and pay explicit attention to her, what you're doing, and how she's reacting. In order for it to be good for you, it has to be good for her FIRST.
The way I tend to start off is when I'm going down on her. I use my tongue/mouth on her clit, the fingers from one hand to massage her G-spot, and take a finger from the other hand (lubricated) and just start by gently stroking and making circles around the outside of the anus. Eventually, I put a subtle amount of pressure on the anus while massaging it in a circular motion. My finger is not pointed in towards her ass, but actually the pad of the fingertip (where your fingerprint is) is what makes contact with her opening, and usually the tip is pointed towards the vagina.