Sadly it's not just the gender thing that's going on here as well, I'm thinking of some study they did where they attached photos with the resumes - the "attractive" people (both men and women) were rated as better skilled than the "normal" and "ugly" people that had the same resume. Although, I think that if I took some fancy photos of myself and primped myself up, I don't think it would do me any favors and I'd get some unwanted attention!
My name isn't even gender neutral, very feminine...I think I once was on some board online using my real name and people were still assuming I was a guy. When I asked how they could possibly think it was a male name, they replied, "I dunno, I was thinking it was like one of those fancy Italian names, like Fabio or whatever..Fabia..yeah, same thing...they always sound like girls names."
I've now started picking the most ridiculously cutsie usernames possible, like this one, to keep people guessing. Sometimes it backfires still and people just get homophobic, but I generally stick with it anyway for fun :)