b>Good to see BHP Billiton have been implementing their share buy back scheme. They bought 350 000 ordinary shares in London yesterday and although I would rather they were out there buying big Potash companies, I suppose having too much cash is a good problem to have. Talking Billiton, I think the surging copper price deserves a mention. I'm sure (hope) you read my post on Tuesday at the end where I added a link about who is buying copper. Well it pointed out that both JP Morgan and Barclays were developing ETF's for the metal. Now this isn't the only reason copper is surging but it shows extra interest in a base metal that is extremely important in the industrial process and a great proxy for growth around the globe. So the demand is definitely there. I just can't imagine the size of the warehouses used to store the physically backed ETF collateral at 410 US cents a pound!