I don't even bother playing online anymore because, honestly, I ran out of patience with the attitudes of the people I was playing with/ against. If a guy loses a game, he's just had a bad round. If a girl loses a game, it's because her tiny cake-baking hands and shoe shopping brain can't handle such complex operations. It's hard to be bothered going through a games' learning curve when every single loss lets your whole gender down, and every win is assumed to have been the product of your opponent's incompetence rather than your own ability.
That said, I think people would really be surprised at how many girls they've actually encountered on the internet. There are plenty of girls with far more patience and determination than me. They just don't identify themselves, for all the reasons stated in the piece.
There's an assumption that female gamers, in so far as they exist, are only interested in the two S's, Sims and Singstar. Single player and "party" games (eg. Singstar) do tend to be far more popular with female gamers than multiplayers and FPS's generally, but if you had to deal with the kind of crap that the articles author has - and I can personally attest to having experienced pretty much everything she described - then multiplayers wouldn't have much interest for you either. So it's a self perpetuating stereotype. However, the single players that sell best to girls aren't what would be considered traditionally girly - Grand Theft Auto is immensely popular with female gamers, as are survival horror games like Silent Hill.
Then there's the larger issue, that FPS's and many multiplayers just aren't designed with girls in mind. It could be something simple like offering a female body type to select. And I don't mean characters like Boobula, Sexpowered Harlot of the High Bikini Elves of Nymphomania. I mean just a female soldier or two in Battlefield, or perhaps a female character in a Tom Clancy game that wasn't some insane war criminal environmentalist. Man, that dude's bitter. Anyway. Guys always think it's a ridiculous niggle, that female gamers invariably find themselves playing as male characters, but how many of those would be happy being forced to play as female ones all the time? It sounds like a small thing, but it's not. It matter because it seriously hampers the games ability to immerse you in it's world. I can make Marcus Fenix saw up as many enemies as I like... but he'll never be my avatar in the game, he's just a guy on the screen. But then, once again, playing as a female character will attract aggro. At least it might freak people out less if they hear you speak though, I suppose.
I'm a manager in a games shop, and I'm so sick of having customers ask me to ask one of the guys a question - on the assumption that I myself couldn't - that I'm starting to get kinda resigned to it.