I don't say bro, but I do, on occasion, say 'man' and 'dude'. Man is usually a replacement for 'damn' though, when I don't feel something merits 'damn', not a form of address.
I've grown irritated by 'dude' though, because I know someone who says 'dude' right before she criticizes you. As in 'Dude, why don't you go to the gym more?'