REST-styled Web services, standard feed formats like RSS and ATOM, and lightweight formats like JSON are some of the technologies that seem to be very prevalent and favored by Web 2.0 clients.
REST风格的Web服务、rss和atom等标准提要格式，以及JSON之类的轻量级格式，它们都是Web 2.0客户机中流行的技术。
It's prevalent, and it can be very very costly.
这是普遍的，而且代价非常非常惨重。
It's prevalent, and it can be very very costly.
这是普遍的，而且代价非常非常惨重。
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