拉丁美洲的Quepasa网站股票曾有一段短暂的爆发，随后投资者们却发现了它并不鼓舞人心的参与度指标。
Latin America's Quepasa (QPSA) had a brief speculative spurt until investors digested its uninspiring engagement metrics.
这也可以给Twitter以及广告主们提供一个了解消费者参与度的绝好指标。
This would also give Twitter and its advertisers a very good metric for consumer engagement.
她认为度量可用性要衡量5个指标：有成效、高效率、参与程度、容错程度、学习难易度。
She suggested that measuring usability is a function of five e's (effective, efficient, engaging, error tolerant, easy to learn).
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