If you do iterative (repeated) usability testing over the course of developing the Web site, many users will participate in testing one or another version of the emerging site.

如果在网站开发过程中你一直在做迭代(重复)的可用性测试，就会有许多用户参加其中一个或另一个版本的网站测试。

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These guidelines have been crafted from usability testing, field testing, website tracking, eye tracking, web analytics and actual complaints made to customer support personnel by disgruntled users.

这些精心制作的指南，囊括了可用性测试、实地测试、网站跟踪，眼球跟踪、网络分析，甚至还有用户对客服人员的抱怨等诸多方面。

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USES the Web 2.0 crowdsourcing model to dramatically drop the price of usability testing.

使用Web 2.0群众外包(CrowdSourcing)模型以极大的降低可用性测试的价格。

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