What exactly is Alan Rusbridger trying to do with the Guardian, or "theguardian", as its masthead has it? On Monday, readers had their first sight of the new Berliner format, which is a shrunken broadsheet or a puffed-up tabloid, depending on how you look at it. But the biggest interest, for many, will be in how, if at all, Rusbridger changes the editorial content. The Times (of which more later)...