I am quite fashinated by the whole "Showing gender in a username" thing. I have been mistaken for a guy many times using this username. "Fun" story involving this username - My G-mail adress is the same as my username and I once had to quickly email a school assignment to a teacher. I used my personal mail because using the school one would involve hours of bullshit. The teacher was the kind of guy who had backpacked a lot and thought stories about that was an accebtable substitute for teaching. He also knew way less than he thought he did. He had mistaken badger for beaver in american slang terms. He thought this was hilarious and that I was some kind of internet escort. I lectured him on the importance and symbolism of badgers in Wisconsin. But without the "girl" at the end it wouldn't have sounded so weird.
No, he faced me about it the cafetery in front of anyone. With eyebrows. Like it was "our secret". It was mostly insinuation. One girl complimented me on what I said back to him later.