I see people are getting excited about a posting on shale gas and other unconventional fuels. This makes me wonder whether there is any great advantage in being too far ahead of the game. For instance, we wrote about this issue in August 2008 and again in September 2008. I had a good look at it in March 2010 - here, here and here. I returned to it briefly in April 2010 and again earlier this month. Fleetingly, only fleetingly, I sometimes wonder why I bother. Then I get back and write another piece.