Evil Jim beat me to it!
I try to treat everyone I come across in real life with dignity and respect regardless of gender. I hold open doors for both sexes but usually not at increased inconvenience to myself. Sort of a "Fairweather Gentleman" perhaps.
That said I do feel better about helping a woman than when helping a man. It might be chauvanism but I tend to see it more as a sense of fulfilled "duty" than otherwise. Maybe that's because my Dad is just so much better at recognizing a person (including women) in need and going to help out.
However on the internet I see no such need as the most I could probably do for a person online is explain something they don't understand and that I don't associate with gender in the slightest.
However I too would appreciate gender identification if for nothing else than to avoid pronoun mistakes.
Fair warning to forum females:
Unless your avatar or username are distinctly female I'll initially assume you are male and refer to you as he. And Interruptor Jones, I'm probably going to forget your actual gender multiple times, glad you don't take offense to it.
However that's pretty much only in pronoun usage, otherwise I think I'm pretty neutral in how I react online.
Oh and if it wasn't already obvious, I'm a guy.(This one is probably less obvious.)
My train of thought is more like a roller coaster that has loop de loops and no safety bars.
I don't know if I'm tall enough to ride.