It is funny, when you interact with people on the internet, you develop a mental image of them - or at least I do. And sometimes people look pretty much like you expect, but sometimes not. I've found this situation to be particularly acute at science blogs, where I rapidly developed strong mental images of my colleagues, only to find that most of them are totally different in real life (thanks Google for clueing me in) than the sense you get from their blogs (even their photos can be misleading).