toilet philanthropist in Japan

some men who have been going to relieve themselves in Japan made an unexpected yet surprising pleasant discovery: an envelope containing 10,000 yen (US$ 82) and a note with good wishes.

The mystery has gripped the nation, with much media speculation about the identity of the unknown benefactor.

The only thing everyone agrees on, given where the money is found, is that the person leaving them is likely to be a man.

Handwriting experts say the letters are all written by the same person, whose shaky handwriting suggests somebody elderly or seriously ill.

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thanks and admiration, as ever, go out to the bbc!