There is such a thing as gaydar. I know, because I have it. When my gaydar goes off, I sense the latency in men, and even sometimes women. It happens so often that I begin to wonder why some people have a problem with gays. What's funny is that I know a straight man that has gaydar. He doesn't realize that's what it is, but he's pretty good at picking up on the signals.
Another sense that kind of works along those lines is the Geek-dar. I don't know what else to call it. Geek-dar goes off for many folks, and some steer away, and others drive closer. It's the strangest thing. Most people can tell a social misfit from 50 paces, but what about the closeted misfits?
I think Geekdar is the ability to sense the degree of social incompatibility that people have. It's a judging mechanism. It's attempts to keep us safe from undesirable company. When we've been burned, we build up these walls that help protect us against certain types of social attacks. It has a rather odd affect on me, I think. I end up wanting to get to know the social misfits, but there are so many and they are not compatible with each other. I'd never have the time to spend with them all. I have a life too. I think socializing with social misfits help to bring them closer to compatibility with others, but in the process I might be marginalizing myself from the (GASP!) socially acceptable.