There was a time when the conversations between the cognoscenti of the wine world happened behind closed doors. Until recently, most of us could have only imagined the whispered commentary of top sommeliers as they passed in the wine cellars of the world's best restaurants, or fantasised about the kinds of things that top wine writers discussed in conclave. So, too, the drinking habits of the well-known in the wine world were only available if published, often on paper, and then usually with a tantalising lack of precision.
Opinions abound as to the true value of Twitter and many employ...