Facebook doesn't exist, even as a walled-garden college social network (Mark Zuckerberg was in his freshman year at Harvard).

马克•扎克伯格此时还只是哈佛大学的一年级新生；Facebook即便是作为封闭的校园社交网站也尚未出现。

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It will require a departure from the walled-garden mentality in which the operation of a static Web site or a network of disparate branded blogs has been the status quo.

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