I have no idea whether I'd be diagnosed with this, but I certainly think that I fit a lot of these criteria and I identify with what people said on this thread. Fortunately, it's usually not so bad when I'm online, although I can see myself doing some of the same things here that I do in real life.

It's really frustrating because most people, even most of my friends, think I'm just lazy or something. When I try to explain to people that social interactions are painfully difficult for me, they say things like, "Well, it's difficult for me too, but I do it." As in, "If you really cared, you'd make more of an effort." The thing is, when people act like that, it turns on the "This person doesn't care about me! Time to run away!" switch in my brain and I can't listen to anything else they have to say, even though it might be helpful.

I wish I had something useful to say here, but all I've got is, "Me too."