1. What is your opinion on girl gamers?
Not sure I have one. I have opinions on individual gamers, male and female, but I haven't noticed that the female gamers I've known were particularly more or less competent than their male counterparts. In general, I think that I largely rate my appreciation of other players by their competence at the game, save for one female gamer (Ciarente), who was the only gamer I've known who consistently produced a
large volume of fiction I enjoyed reading. Most others I knew, male and female, produced less.
2. After finding out an opponent or teammate is the opposite gender, do you feel different about them?
Not unless they expect me to treat them differently. When playing Eve, my behavior towards female gamers was not significantly different from the way I treated the male ones - I liked working with Stitcher, Dex, Killjoy Tseng, Susan Black, and Ciarente, who were male, male, male, female, and female, but who I enjoyed playing with. On the other hand, I spent a reasonable time trying to kill (in-game) people like Hitome Kei, Esna Pitojee, and Aldrith Shutaq, who, to the best of my knowledge, were female, male, and male. Their RL gender mattered far less to me than the possibility of blowing up their spaceships and selling their frozen corpses.
3. Do you feel gamer girls are their own clique within gamers as a whole?
I've rarely noticed that they have. Almost never, in fact. One or two of the very competent girl gamers I've known became sort of a "queen bee" in their organization, around which most of the guys orbited, but that was due, I think, to their competence and personality, since I knew several guys who held nearly identical positions within purely male-composed organizations.
4. Do you feel their is a rivalry or alliance between the genders in the gaming community?
In the gaming community as a whole? I haven't seen it. I think most people who play games just want to do that. But there is a significant minority of jerks who seem to think that attacking female gamers is the thing to do, which puzzles me. I also think that there is the occasional girl who wants to use her rarity in a certain community as a means to advantage within that community. But I don't see a truly systemic rivalry, no.
5. Do you feel sexism is an issue, and if so, have you experienced it?
I think it's quite obviously an issue, although not quite a clear-cut one. I've heard people say that Dragon Age is very non-sexist, while I found that there were things in it that made me roll my eyes. On the other hand, I've seen people making allegations of sexism in games that I couldn't quite follow.
As for the players, sure. I've seen sexists in games. They were rarely the most pleasant people to be around, and there is always the possibility that I'm blind to sexism in myself. I was in one group where a female gamer led the way in calling other players d---s, c---s, and a variety of other gender-related insults that nonetheless had more to do with a desire for insult variety than sexism. I was also in another group where the lone girl asked everyone to refrain from such language, which was generally observed without much griping. In neither group did there seem to be much concern over the gender of the players in our group.
That said, I can sometimes be oblivious to such things, and also in that vein, it is true that I don't believe I've experienced sexism personally while gaming. In real life? Absolutely. In games? No.