As far as I can tell, she's not trying to get some sort of payout from Airbnb. If she were, it would be much easier to threaten to sue, and then settle out of court, than to post about it on her blog. I think that she was just trying to warn people about the risks of Airbnb; that while it's all been pretty safe and a rewarding experience for everyone involved so far, she's managed to have the inevitable first truly awful experience, and Airbnb basically offers nothing to help deal with the situation.
Of course she knows that people suck. But sometimes you can be lulled into a false sense of complacence. No one has had problems so far. You get to talk to the person beforehand. And you may believe that Airbnb has better safety procedures than they actually do; you figure that they've done their homework, do some sort of basic screening of hosts and guests, when in fact they actually do nothing and don't give you enough information to do it yourself.
Have a little sympathy for her. Even if you know people suck, it can be traumatizing when it actually happens to you. She had her apartment vandalized, many of her most personal belongings stolen, her identity stolen, her credit card stolen and used.
Guys like spolsky who suggested it might be a group of goons hired by a hotel association.
I now just think she got burglarized, and found out the hard way that SFPD can't really do much to help. She probably doesn't have renter's insurance, which does not apply in the case of an illegal sublet anyway. She's a freelance writer, so she's probably broke and therefore trying to squeeze something out of AirBNB.
But why would you assume that she's trying to squeeze something out of Airbnb, as opposed to what she said, which is to warn people about the risks and about the fact that Airbnb basically has no plan and offers no real help for how to deal with this sort of situation? I've seen nothing other than an explanation of what happened, and a clarification that their spin on the issue doesn't really match up with her experience.
I honestly don't think there's much AirBNB can do to vet people which wouldn't make the service unusable.
I don't think that any of these would make the service unusable; if they did all of them, it might be a bit cumbersome, but implementing one or two of these measures would be fine. They would add a little bit of friction, for sure, but I think that it would be worth it for avoiding these sorts of awful situations.