Online, I try tend to correct the people that know I am genderless. When they call me he/him/etc... I don't hesitate to let them know I'm not a he and -poke- or -bite- them when they forget it.
Being called a she/her/etc... seems like more of a complement from females in most cases, because it shows they see me beyond what I was born as. I also know they are more comfortable with me as well.
For men, hard to say with them. They are so confusing to me alot of the time. Two guys online found out about me being androgynous, I freaked out because I wasn't exactly ready to here what the male gender thought of me just yet. I was surprised to find they was ok with it, and comfortable around me. O.o; Though the second guy refered to me as the "confused" person, which I let him know I didn't like it. Both guys are pretty kewl, oddly they don't seem to treat me as another "male", I'm treated more like a "female".
They don't make me to nervous like other guys I know online either.^^
Anyways being very open with being androgynous online and IRL with Naomi(my best friend) before she moved, I got so comfortable with it. One day at work a customer said something to me gender related directed to me, can't seem to remember what exactly it was at the moment. ^^;;;
I know what she said wasn't bad, if I remember it I'll post it~
I just knew I gave her the weirdest look when she said it and I really think "I'm not exactly I he/him" was about to slip out of my mouth, but so lucky I caught myself.^^;;; I need to be more careful.