When a product is sold, sellers can print out a shipping label, attach it to the package and drop it at the post office.

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Drop in your tablet, and the whole package looks a lot like something that might come straight from Cupertino.

ENGADGET: ClamCase Pro makes your iPad look like a thick MacBook Air

It is hard to understand why Mr Obama opposes this idea, beyond a traditional Democratic distaste for helping out big oil firms indeed, he has said he might drop his objections in an effort to push a bipartisan legislative package on energy.

ECONOMIST: Energy and the environment

The Nikkei's drop below the 9, 000 level contributed to pressure for the government to produce an economic revival package to restore the stock market's performance.

BBC: Japan's growth picks up