Yesterday was a fertile day for comments on comments: John Gruber, Bijan Sabet and then Marco Arment all provided interesting food for thought. For starters, I firmly believe that what someone chooses to do on their own blog is and should always be entirely their own decision. It is their property after all and nobody is forced to go there or interact with it. That includes the choices to have no comments at all, to have moderated comments, to allow comments *and* delete them after the fact (...