I have an interesting little side-opinion about flamboyance (at least in the US). I feel that a lot (no assumptions on percentage however) of gay men feel forced by society to act flamboyant to express their sexuality. For example, some of my female friends were delightedly talking about how a gay male friend was developing a lisp, an accent and some flamboyant gestures. That kind of positive reinforcement of certain behaviors heaped on just because he's gay makes no sense.