The second sell-off happened last week, when Mr Semel warned investors at a conference hosted by Goldman Sachs that growth in online advertising was not quite what he had hoped.

• 上周在一次高盛主办的会议上，萨谬尔先生警告投资者，在线广告的增长没有达到他的预期，雅虎的季度收益水平将处于之前预期的低端。