I am A-. I would like to donate blood, but since I'm anemic they tell me that they can't take it anyway. I am an organ donor though, so I guess that's one good thing. And if I'm remembering correctly from AP Biology, the RH-/+ thing is just the -/+ beside the A,B, or O. It is not a seperate blood type within itself, just an additional breakdown to the regular blood type.