Twitter的忠实用户安迪·罗迪克（美国网坛超级明星）通过twitter告诉球迷们他将于11月31号跟艾尔顿·约翰对决——随后才意识到11月只有30天！ 这件事曾一度引起不快。

Andy Roddick, who more typically uses Twitter to tell fans he is meeting up with Elton John on 31 November – he later realised that the month is only 30 days long – has taken particular umbrage.

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