This is a problem with LJ: there is an illusion of intimacy, but in actuality we may know nothing about each other. This meme might help. If you like, ask me something (more than question if that is what comes to mind) you think you should know about me. Something that should be obvious, but you have no idea about. Ask away.
You may also post this in your LJ and find out what people don't know about you.