I don't want to under-estimate the importance of movable type...but what has Gruber developed? Looking at the list at http://daringfireball.net/projects/ doesn't exactly fill me with shock and awe. I'd imagine with his huge following in the apple community he could put almost anything on the app store and it would sell. Can someone enlighten me? I guess my meta-point is, why am I reading software development career advice from someone who doesn't seem to be a developer?