I'm sort of with Sean but also with Snorky; The action is symbolic in both a negative and positive way - it IS a reminder and representative of a potential catastrophe that we should think about more so in awareness terms good BUT it is also a very, very, very easy way of deluding ourselves that we are somehow involved and committed to fighting climate change whilst doing absolutely bugger all else that would show proper committment like not flying...er...not driving...ultimately not using any electricity produced by coal..... To be honest most people's behaviour belongs to the latter so I won't be joining in...there's no real commitment by the vast majority of us to tackle this in anyway..... Fortunately, and just to show Sean I'm not all dramatic doom and gloom, when the economy goes down the pan next year we won't have any petrol, they'll be compulsory powercuts and no-one will be flying anywhere on hols with the ? worth about 10 Cents B)